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Before The Public Utilities Commission Of The State Of California

Order Instituting Rulemaking on the Commission's own Motion Into Competition for Local Exchange Service.

R.95-04-043

(Filed April 26, 1995)

   

Order Instituting Investigation on the Commission's own Motion Into Competition for Local Exchange Service.

I.95-04-044

(Filed April 26, 1995)

   
   

REPORT ON THE 213 AREA CODE

Submitted in Compliance with California Public Utilities

Code Section 7937, CPUC Decision 99-12-051, and Administrative Law Judge

Ruling Issued on January 18, 2000

CALIFORNIA PUBLIC UTILITIES COMMISSION

TELECOMMUNICATIONS DIVISION

Respectfully submitted

October 10, 2001

Jack Leutza, Director

Telecommunications Division

505 Van Ness Avenue, 3rd Floor

San Francisco, CA 94102

REPORT ON THE 213 AREA CODE

CALIFORNIA PUBLIC UTILITIES COMMISSION

TELECOMMUNICATIONS DIVISION

October 10, 2001

Prepared by Telecommunications Division:

TABLE OF CONTENTS

EXECUTIVE SUMMARY 11

CHAPTER ONE: OVERVIEW OF NUMBERING 66

CHAPTER ONE: OVERVIEW OF NUMBERING 77

CHAPTER TWO: 5.8 MILLION UNUSED NUMBERS IN THE 213 AREA CODE 1616

CHAPTER THREE: NUMBER POOLING AND OTHER NUMBER CONSERVATION MEASURES 3939

CONCLUSION 4747

EXECUTIVE SUMMARY

Like much of the country, California currently is experiencing a numbering crisis. From 1947 to January 1997, the number of area codes in this state increased gradually from 3 to 13. During the next three years, however, the number of area codes in California nearly doubled. By the end of 1999, California had 25 area codes. The California Public Utilities Commission (CPUC) recently has implemented several measures intended to ensure efficient use of telephone numbers. Without the implementation of major number conservation measures, the telecommunications industry had plans underway to add 22 more area codes in California by the end of 2003, resulting in a statewide total of 47 area codes.

This study recounts the history of the 213 area code, now covering the innermost portion of Los Angeles County. The 213 area code is one of the three original area codes in California, and it is wholly contained within the Los Angeles Metropolitan Statistical Area (MSA). In 1947, the 213 area code covered the entire southern portion of California. Now, it contains only three rate centers in central Los Angeles, with the remainder of 213 split into the 310, 323, 562, 619, 626, 714, 818, 858, 909, and 949 area codes.

This report should be viewed in a broader context than the facts pertaining solely to the 213 area code. The report evaluates the status of number availability in the 213 area code, and discusses the various state and federal policies which govern number use in California and nationwide. In addition, the report analyzes number use by carrier category and identifies what measures the CPUC can employ in the 213 and other area codes to improve efficiency of number use in order to avoid prematurely opening new area codes. Data is self-reported by the companies; the CPUC staff has not audited any of the 213 utilization data submitted for this study and report.

The utilization study sheds new light on the numbering crisis in the 213 area code. The data reveals that despite increasing demand for numbers, the 213 area code is not fully utilized. The study found that, of the 7.9 million useable numbers in the 213 area code, approximately 5.8 million, or almost three-fourths, presently are not in use. The data further establishes that the 213 area code possesses considerable room for growth, and thus, aggressive measures such as splits or overlays are not yet warranted in the 213 area code. The report further urges the CPUC to seek from the FCC authority to implement Unassigned Number Porting (UNP) as a means to more efficiently use numbers still available in the 213 area code.

This report is filed in compliance with CPUC Decision (D.) 99-12-051, and with AB 406, enacted by the California Legislature in the 1999 legislative session. (Chapter 99-809, 1999.) AB 406, codified as Public Utilities Code Section 7937, requires the CPUC to obtain historical telephone number use data from every telecommunications company in California. The CPUC's Telecommunications Division (TD) first obtained and analyzed data from the 310 area code in Los Angeles late in 1999, and produced a utilization report on 310 in March, 2000. In November 2000, TD completed utilization reports covering the 415, 510, 818, and 909 area codes, in March 2001 TD completed utilization reports covering the 408, 619, 650, and 714 area codes, in May 2001, TD published utilization reports covering the 323, 562, 916 and 925 area codes, and in July 2001, released reports on the 626, 707, 805, and 949 area codes. This report on the 213 area code continues TD's analysis covering number utilization levels in specific area codes.

BACKGROUND

The 213 area code contains approximately 7.9 million useable telephone numbers. These numbers are available to telecommunications companies, which obtain the numbers from the North American Numbering Plan Administrator (NANPA),1 and in turn, assign the numbers to their customers for their immediate use. Alternatively, companies may reserve numbers for future use, or retain numbers for some internal (administrative) use. Some companies provide blocks of numbers to resellers or "dealers", which then assign those numbers to customers. The FCC deems numbers that companies allocate to resellers to be "intermediate" numbers. In addition, each assigned number, after disconnection, must "age" during a transition period before assignment to the next customer. Many companies have inventories of numbers in the "aging" process. Finally, some numbers are not available for public use, as they have been set aside for emergency purposes, for technical network support, or for other reasons. The FCC has defined numbers in these five categories - assigned, administrative, reserved, intermediate, or aging - as unavailable, either because they are already in use or are designated for some present or future use.

FINDINGS

TD's analysis shows that, of the 5.8 million available numbers, 3.4 million are available for allocation to companies through an application process. Companies possess the remaining 2.4 million unused numbers. Wireline carriers, such as Pacific Bell and many competitive local exchange carriers, hold roughly 1.4 million available numbers, while wireless carriers2 hold approximately 1.0 million available numbers.

At the same time, the 213 study finds that under FCC rules, about 1.7 million numbers cannot be contributed to a future 213 number pool for reassignment to other companies. The FCC has determined that wireless carriers do not have to participate in number pools at this time.3 In addition, the FCC has determined that the CPUC may only require wireline carriers to contribute to a number pool those blocks of 1,000 numbers that are 10% or less contaminated,4 meaning those blocks in which only 100 or fewer numbers are unavailable. However, wireline carriers may also keep a portion of the 10% or less contaminated blocks if they need to use those blocks within six months. Thus, 1.7 million numbers out of the 5.8 million unused numbers in the 213 area code are available only to the companies holding those numbers, because they are held by wireless carriers, are in blocks that are more than 10% contaminated, or are in blocks 10% or less contaminated but kept for six-month inventory. The study further finds that, of the 5.8 million numbers not in use, a maximum of 4.7 million could be made available to companies through pooling if (a) the companies were required to donate blocks with higher contamination levels to a future pool, and (b) wireless carriers were required to participate in a 213 number pool. The first table below illustrates the current distribution of numbers, assuming that pooling is in effect in the 213 area code.5 The second table shows the distribution that would occur if all the recommendations in this report were implemented.

Finally, the study notes that companies identify 2.1 million numbers as unavailable. TD staff recommends specific measures the CPUC can employ to ensure that companies use those "unavailable" numbers more efficiently. Given the near doubling of the number of area codes in California from 1996 to 1999, this vital public resource should be used as efficiently and effectively as possible. The CPUC and the telecommunications industry should strive to minimize the quantity of numbers left "stranded" in company inventories. The 213 Area Code Report recommendations are summarized in Appendix I.6

CHAPTER ONE: OVERVIEW OF NUMBERING

A. INEFFICIENT USE AND INCREASING DEMAND FOR NEW NUMBERS IN CALIFORNIA ARE CAUSING AREA CODE PROLIFERATION

California is currently experiencing an explosive demand for telephone numbers and area codes. The increased demand for numbers is due to many factors, including competition for local phone service, as well as the popularity of faxes, pagers, cell phones, internet services, etc. California's robust economy and the growth in the state's population also contribute to the increased demand for telephone numbers. This increase in demand is complicated by a number allocation system dating from the 1940s that is inefficient in today's competitive marketplace.

Prior to 1997, one phone company7 provided local telephone service to all customers in a particular area, and new area codes were opened as the population grew. The number of California area codes rose steadily from 3 in 1947 to 13 in 1992, and stayed at that level until January 1997. During the next three years, however, the number of area codes in California nearly doubled. By the end of 1999, California had 25 area codes. The Telecommunications Act of 1996 sought to open competition for the local telephone service market and competitive local phone companies8 began to enter the marketplace, each requiring its own stock of numbers. The traditional system of number allocation was not designed to provide telephone numbers to more than one company.

In the past, when telecommunication companies needed telephone numbers to serve their customers, they received blocks of 10,000 numbers, i.e. prefixes. Because companies were assigned blocks of 10,000 numbers, they may have been assigned more numbers than they needed. For example, under this system, a company with only 500 customers would have received a 10,000 number block, the same quantity of numbers a company with 9,500 customers would receive. Thus, numbers are taken in these large blocks, creating an artificial demand for more numbers, which in turn fuels the need to open more area codes. The need to assign 10,000 numbers is a practice from the past when one telephone company provided service to all customers in its territory. Today, with over 200 telecommunications companies in the state needing numbers to serve customers, and with the limited quantity of numbers available in each area code, this process is no longer an efficient way to allocate numbers.

The rise in demand for numbers combined with the inefficient allocation system for numbers has forced the rapid opening of new area codes throughout the state. Since 1997, the number of area codes in California has nearly doubled to 25. Without the implementation of major number conservation measures, the telecommunications industry had plans underway to add 22 more area codes in California by 2003. With more and more companies needing numbers of their own, new area codes are not necessarily the best solution.

B. 213 HISTORY AND CPUC DECISIONS

The 213 area code is a classic example of area code proliferation in California. The 213 area code is one of the first three area codes created in California in 1947, originally encompassing all of southern California. The 213 area code now includes only three rate centers in central Los Angeles. The creation of the 310, 323, 562, 619, 626, 714, 818, 858, 909, and 949 area codes reduced the 213 area code to a small area encompassing the innermost portion of Los Angeles County. The 213 area code is contained within the Los Angeles Metropolitan Statistical Area (MSA).

1. Monthly Lottery Allocates Prefixes

For those area codes nearing number exhaust, the CPUC has instituted a lottery process to fairly allocate the remaining prefixes among phone companies when demand exceeds supply. The 213 is one of five area codes in California not in rationing. In the twenty remaining area codes, each company requiring prefixes submits applications for initial and growth prefixes to the NANPA Code Administrator. If more applications are received than can be satisfied in that month, the first applicants chosen by random drawing are assigned a prefix, and the remaining applicants are placed on a priority list and receive prefixes in one of the following months' lotteries in the order they were drawn. Once every company requesting a prefix has received one, a new drawing is held and additional companies are eligible to receive prefixes

Thirty-six prefixes were allocated in the 213 area code by companies applying for codes between January 1, 2000 and December 31, 2000. With the CPUC working with companies to reclaim excess prefixes held by companies, eight unneeded prefixes were returned by companies to the NANPA during the same period, for a net distribution of twenty-eight prefixes. During the first nine months of 2001, nine prefixes have been requested by carriers, and nineteen prefixes have been returned to the NANPA, for a net return of ten prefixes. As of September 30, 2001, there were 335 prefixes available for assignment in the 213 area code.9 NANPA estimates that the 213 area codes will reach number exhaust by the second quarter 2007, based on historic demand.

C. CPUC EFFORTS TO RESOLVE AREA CODE PROLIFERATION

Recognizing the substantial social and economic burdens associated with constant area code changes, the CPUC has taken steps to resolve the numbering crisis. Responding to widespread public outcry over the proliferation of new area codes, the CPUC suspended, beginning in December 1999, all plans for new area codes previously approved. In July 2000, the CPUC adopted number conservation measures, including establishing number pooling trials, fill rates, and sequential numbering.

1. Number Pooling

The CPUC, with FCC approval, has initiated pools in ten area codes, in order to boost the efficiency of phone number allocation. In addition, the CPUC has ordered number pools for four other area codes during 2001.

Number pooling allows telephone companies to receive numbers in smaller blocks than the traditional 10,000 numbers, enabling multiple providers to share a prefix, thereby utilizing this limited resource much more efficiently. The technology that enables the network to support the assignment of smaller blocks is referred to as Local Number Portability or LNP.10 LNP was originally mandated by the FCC as a means to enable customers to retain their telephone numbers when they switch telephone service to another local provider. This same platform is utilized for number pooling. The FCC had required all wireline carriers to become LNP-capable by the end of 1998 in the most populous 100 Metropolitan Statistical Areas (MSAs) in the country. Thirteen of the top 100 MSAs are located in California; the 213 area code is in one of them.11

Though LNP technology has existed for several years, the FCC later granted cellular and PCS companies an extension of time until November 2002 to become LNP-capable. The FCC gave paging companies a permanent exemption from the LNP requirement.12 Thus, at this time only wireline carriers13 can participate in number pooling. In the area codes with number pooling, wireline carriers participate in pooling and wireless carriers participate in the lottery. In the remaining area codes with rationing in effect, all phone companies participate in the lottery.

The CPUC has been aggressively setting up number pools. In November 2000, by an Assigned Commissioner's Ruling, the CPUC established a schedule for ten number pools for 2001. The CPUC also issued a more detailed schedule in February 2001 identifying the start dates for the last nine of the ten number pools scheduled to begin in 2001. A pooling schedule has not yet been set for the 213 area code. Once pooling is implemented in the 213 area code, all wireline companies will be required to donate 1,000-number blocks to the pooling administrator. Under the number pooling program, all LNP-capable carriers will receive numbers in blocks of 1,000 in the 213 area code on an as-needed basis. There is no rationing process in the pool and the blocks received can be put into service almost immediately upon receipt. All wireless carriers will continue to receive numbers in blocks of 10,000 through the regular application process with NANPA.

2. Improved Number Inventory Management

While number pools have improved the efficiency of the distribution of numbers to companies, companies have not had strong incentives to efficiently manage the numbers already allocated to them. Thus the CPUC ordered companies to improve number inventory management with measures including rules on fill rates and sequential numbering.

In July 2000, the CPUC issued Decision 00-07-052, which extended number conservation measures adopted in the 310 area code to other area codes within California. These number conservation measures include the following:

· Companies are required to return to the NANPA any prefix held for more than six months without being used.

· An "Imminent exhaust criterion" is established in all area codes with lotteries or number pools. In each rate center in which companies request additional numbers, they must provide to the NANPA a form demonstrating they will be out of numbers within six months.14

· Companies must satisfy a minimum 75% fill rate requirement before being eligible to request a growth prefix in any area code in rationing and before being eligible to receive a thousand-block through a number pool. Companies must assign numbers in thousand-block sequence, assigning numbers in the next block only once a 75% fill rate has been attained in the prior block.

TD anticipates these policies will potentially free more numbers for use in number pooling, to be allocated through the lottery, or to be otherwise used by companies. Indeed, these measures together with the effects of number pooling have already achieved some positive effects. For example, since the CPUC extended the 75% fill rate and imminent exhaust rules to all area codes, including 213, CPUC staff has observed that the demand for growth prefixes has declined. Further evidence of the effectiveness of the CPUC's number conservation policies is the recent increase in the number of excess prefixes in the 213 area code being returned to the NANPA by companies, as mentioned in section B.1 above.

3. CPUC Efforts at Federal Level

The FCC has exclusive jurisdiction over numbering in the United States. Therefore, the CPUC's number conservation policies (pooling, fill rates, and sequential numbering) are governed by the FCC's delegation of authority to the states. In recognition of the severity of the numbering crisis in California, the CPUC has aggressively petitioned the FCC for additional authority. As a result, the FCC has delegated authority to plan and implement area code changes, as well as authority to implement number conservation measures.

      a. Authority Regarding Pooling

On April 26, 1999, the CPUC filed a petition with the FCC requesting authority to institute number pooling trials and other number conservation measures within the state to better manage this public resource. On September 15, 1999, the FCC granted that petition, allowing the CPUC to institute mandatory number pooling on a trial basis, deploying it sequentially in one MSA at a time. When the FCC granted the CPUC the authority to deploy various numbering resource optimization strategies, including the authority to institute thousand-block numbering pooling trials, it also clarified that California's authority will be superseded by future national measures adopted by the FCC.

On March 31, 2000, the FCC released the Numbering Resource Optimization Report and Order and Further Notice of Proposed Rulemaking (first NRO Order).15 The first NRO Order sets forth rules for defining numbers, forecasting, tracking and auditing companies' use of numbers, and for conservation measures associated with number usage, including but not limited to number pooling. The definitions of numbers and timelines for aging and reserved numbers that were adopted in that order have been incorporated into the utilization data cited herein.

With the release of the first NRO Order, the FCC adopted a number of administrative and technical measures that will allow it to monitor more closely the way numbering resources are used and to promote more efficient use of numbering resources. In particular, the FCC adopted a nationwide system for allocating numbers in blocks of one thousand, rather than ten thousand, wherever possible, and announced its intention to establish a plan for national rollout of thousand-block number pooling.

Because the FCC recognized that state thousand-block number pools underway might not conform to the national standards set forth in the first NRO Order, the FCC gave state commissions until September 1, 2000 to conform their thousand-block number pools to the national framework. One requirement imposed in California that differs from the national standards is the requirement that companies meet a 75% fill rate in each block before they may receive an additional block from the pooling administrator. The CPUC recognized the 75% fill rate as a critical factor in the success of the 310 pooling trial and petitioned for a waiver of compliance with the national rules. On August 31, 2000, the FCC issued an order granting the CPUC authority to continue to use its pooling rules until the FCC decides on the merits of the petition, or until December 31, 2000, whichever occurs sooner. This allowed California to continue applying the 75% utilization rate in its number pooling efforts.

On December 29, 2000, the FCC issued its Second Report and Order on Number Resource Optimization. In the second NRO Order, the FCC ruled on California's Petition for Waiver, concluding that the CPUC may continue to use its utilization thresholds subject to parameters set in this order (when FCC thresholds exceed California's, California must migrate to the more stringent utilization thresholds). The FCC also declined to adopt a transition period between the time that covered cellular carriers must implement LNP and the time they must participate in any mandatory number pooling.

The first NRO Order further constrains the CPUC by concluding that the rollout of thousand-block number pooling should first occur in area codes that are located in the largest 100 MSAs. In its comments prior to the release of the first NRO Order, the CPUC had argued that California would be precluded from exploring whether number pooling could alleviate the crises for number resources in many parts of the state that are located outside the top 100 MSAs. The CPUC believes the FCC should delegate authority to the states to order deployment of LNP. This grant of authority to California would make pooling possible throughout the state.

      b. Authority Regarding Technology-Specific Area Codes

Currently, state commissions are constrained by the FCC from establishing an area code specifically for wireless telecommunications services. On April 26, 1999, the CPUC filed another petition with the FCC requesting authority to create service-specific or technology-specific area codes. In the 213 area code, there are 36 wireless carriers holding 185 prefixes. If the CPUC were allowed to create a separate area code for those companies, the 185 prefixes in the 213 area code could be reassigned to other phone uses, thus prolonging the life of the existing area code. To date, the FCC has not acted on the CPUC's petition. In the Second Report and Order, the FCC asks for further comments on technology-specific or non-geographic area codes.

On September 28, 2000, Governor Davis signed into law Senate Bill (SB) 1741, authored by Senator Bowen. SB 1741 requires the CPUC to request authority from the FCC to require telephone corporations to establish technology-specific area codes based on wireless and data communications, and to permit 7-digit dialing within both that technology-specific area code and the underlying pre-existing area code or codes. The bill requires the CPUC to use any authority so granted unless it makes a specified finding that there is reason not to do so. The legislation also prohibits the CPUC from implementing any authority granted by the FCC in a manner that impairs number portability. The petition that the CPUC filed with the FCC in April 1999 fulfills the technology-specific area code requirement set forth in the bill.

The bill also prohibits the CPUC from approving new area codes unless a telephone utilization study has been performed and all reasonable telephone number conservation measures have been implemented. This utilization study fulfills the telephone utilization study portion of SB1741.

4. Utilization Studies

Before requiring the residents and businesses of the 213 area code to undergo another area code change, the CPUC recognized the necessity of determining the number of telephone numbers that are in use and the number yet to be used. To that end, the CPUC required companies to provide usage data to the CPUC as of December 31, 2000. The TD contracted with NeuStar to collect the data; NeuStar submitted the aggregated data in its entirety to TD on April 1, 2001. The definitions used in the utilization study are in Appendix A-1.

CHAPTER TWO: 5.8 MILLION UNUSED NUMBERS IN THE 213 AREA CODE

Of the 7.9 million numbers in the 213 area code, companies hold 4.6 million. The other 3.3 million numbers have yet to be assigned to companies. The CPUC's utilization study found that, of the 4.6 million numbers held by companies, 2.4 million remain unused in their inventories. Therefore, 5.8 million numbers in the 213 area code remain unused. A portion of these unused numbers can be made available for use by all companies, either through pooling or through the monthly allocation process. In addition, companies have reported 2.2 million numbers as unavailable. A portion of these unavailable numbers can be used more efficiently if the recommendations contained in this report are implemented.

A. THE SCOPE OF THE UTILIZATION STUDY

    5. Prefix Distribution Statistics

The CPUC asked 65 companies, holding 459 prefixes (4.6 million numbers) in the 213 area code, to report their utilization data, with a reporting cutoff date of December 31, 2000. Table 2-1 shows the distribution of these prefixes by type of carrier; incumbent local exchange carrier (ILEC), competitive local exchange carrier (CLEC),16 paging carrier and cellular/PCS carrier.

    6. Companies Reporting

Of the 65 companies in the 213 area code, 57 submitted utilization data. A list of the companies that have been allocated numbers in the 213 area code appears in Appendix A-2.

7. Non-Reporting Companies

The remaining eight companies hold 23 prefixes in the 213 area code. According to NANPA, TSR, Net Tel, Urjet Backbone Network, and Prism are in bankruptcy status or are out of business. Table 2-2 summarizes this information.

· The CPUC should direct the NANPA to withhold issuing prefixes to the non-reporting carriers until the required information is submitted. The CPUC should also consider levying fines or other penalties for failure to comply. If these prefixes are not being used for customers, the CPUC should direct the NANPA to reclaim the prefixes as soon as possible.

D. 5.8 MILLION NUMBERS AVAILABLE IN THE 213 AREA CODE

The 213 area code has 5.8 million unused numbers. Of these unused numbers, TD found that companies held 2.4 million numbers in their inventories.17 These numbers held in inventory are currently not used for any purpose but held in anticipation of future need. The remaining 3.3 million unused numbers are not yet assigned to companies and are available for allocation by NANPA. The summary of available numbers is shown in the table below.

Table 2-3

Summary of Available Numbers

Wireline Carriers 1,352,106

Wireless Carriers 956,963

Type 1 Carriers18 65,603

Total Available/Unused Numbers Held by Carriers 2,374,672

Numbers Set Aside for 213 Pool 0

Numbers Available for regular assignment 3,380,000

Total Available Numbers in the 213 Area Code 5,754,672

Not all of the 5.8 million unused numbers are immediately available to every company that wants numbers. Of the 5.8 million, a maximum of 4.0 million numbers19 are estimated to be available to all companies via a future number pool or from NANPA. The remaining 1.7 million20 numbers are only available to the companies that hold them. As shown in the table below, the CPUC could shift 0.7 million numbers from one category to the other by adopting the recommendations21 in this report. Of the 5.7 million unused numbers, those actions could result in making a maximum of 4.7 million numbers22 available to all companies, with the remaining 1.0 million numbers available to the companies that hold them.

*Assumes retention of 6-month inventory

Current technology requires a company to be LNP capable in order to donate numbers for another company to use. All wireline carriers in the 213 area code are required to be LNP capable.23 Wireline carriers hold 1.4 million unused numbers in the 213 area code. In order for the unused numbers to be retrieved from company inventories, the FCC requires these unused numbers to be retrieved from blocks which are 10% or less contaminated.24 Of wireline companies' 1.4 million unused numbers, 1.1 million are contained in 1,066 thousand-blocks held by LNP-capable companies that are 10% or less contaminated. However, not all of these 1.1 million numbers can be retrieved from companies' inventories because companies need to have enough numbers to meet anticipated future need.25 Both the CPUC and the FCC have determined that six months of inventory is a reasonable quantity to hold for future use. TD will not know how many of these 1.1 million numbers will be available for pooling until companies submit their pooling block donations to the pooling administrator. The CPUC has not yet ordered pooling in the 213 area code. In the meantime, a reasonable estimate of numbers likely to be donated to a 213 number pool, based on the experience of the 310 pool, is 500,000.26 The difference between the potential maximum 1.1 million currently poolable numbers that wireline carriers hold and the 500,000 numbers estimated as likely to be donated to a pool consists of 600, 000 numbers that companies are estimated to need for their six-month inventories.

The remaining 300,000 of the 1.4 million unused numbers cannot be retrieved, either because the numbers are in blocks more than 10% contaminated or because they are in non-LNP-capable blocks. However, companies can immediately use these numbers to provide service to their customers or meet other needs. Wireline carriers hold 300,000 numbers in blocks that are more than 10% contaminated.27 Wireline carriers hold another 30,000 unused numbers in blocks that are non LNP-capable.

Wireless carriers hold 1.0 million unused numbers in the 213 area code. Of these unused numbers, 400,000 are in blocks that are 10% or less contaminated, and 560,000 numbers are in blocks more than 10% contaminated. Until wireless carriers become LNP capable in November 2002, none of these numbers may be reallocated to other companies. In the interim, wireless carriers may assign these numbers to their own customers.

E. ANALYSIS OF AVAILABLE NUMBERS

    1. Analysis of Wireline Carriers' Contamination Rates

The CPUC requires each company participating in number pools to donate blocks that are 10% or less contaminated, excluding those retained for the company's six-month inventory.28

TD analyzed the 213 utilization data to determine the availability of numbers within blocks of different contamination rates in order to assess different contamination thresholds the CPUC could apply to the number pool. The following table summarizes available numbers by contamination level and rate center for wireline carriers.

Table 2-5

Wireline Carriers' Available Numbers by Block Contamination Level

The first two numeric columns of Table 2-5 show the potential numbers available to the number pooling trial, except for those numbers kept for companies' six-month inventory, under current rules. Available numbers in one rate center cannot be used in another rate center.

The last three columns of Table 2-5 capture available numbers in blocks that are more than 10% contaminated but no more than 25% contaminated. Under the current number pool rules, companies retain thousand-number blocks that are more than 10% contaminated. Increasing the contamination rate threshold for donations from 10% to 25% would potentially free up an additional 95,00029 numbers for use in the number pool. TD cautions that, although Table 2-5 shows potential results from increasing allowable contamination levels, further analysis and input from the industry would be necessary to determine accurately the quantity of additional blocks that could be added to a pool while still leaving companies with a six-month inventory.

As shown by Table 2-5, and also shown graphically in Table B-3 of Appendix B, all rate centers have available numbers from blocks of differing contamination levels up to 25%. The tables show that if the contamination ceiling for pooling were increased from 10% to 25%, more unused numbers exist in all rate centers that potentially could be donated to the pool.

· The CPUC should petition the FCC to increase the contamination level for pooling to 25%. If the FCC grants the petition, the CPUC should increase the maximum contamination level of donated blocks from 10% to 25% for all LNP-capable carriers.

    2. Analysis of Wireless Carriers' Contamination Rates

Under current FCC rules, cellular and PCS companies are exempt from number pooling until November 2002 when they must become LNP capable. The FCC has indefinitely exempted paging companies from becoming LNP capable. Table 2-6 shows available numbers in blocks of differing contamination levels held by wireless carriers. Wireless carriers hold 395,000 available numbers in blocks that are 10% or less contaminated, as shown in the first two numeric columns of Table 2-6. Wireless carriers also have 134, 900 available numbers in blocks with contamination levels greater than 10% but less than or equal to 25%, as indicated by the last three columns of Table 2-6. Of these 530,000 unused numbers held by wireless carriers, TD estimates that 132,000 (25%) are held by paging companies30. TD staff is investigating whether there are methods to make some of these 132,000 unused numbers available to other carriers despite the FCC's exemption of paging companies from becoming LNP-capable.

Table 2-6

Wireless Carriers' Available Numbers by Block Contamination Level

Because the FCC has granted wireless carriers an extension of time to implement LNP, no wireless carriers serving the 213 area code are capable of implementing LNP. Thus, wireless carriers cannot participate in number pooling at this time, resulting in 529,810 unused numbers in blocks between 0% and 25% contaminated in the 213 area code.

· When cellular and PCS companies become LNP capable in November 2002, the CPUC should direct those wireless carriers to donate to and participate in all number pooling trials in California, using the same contamination threshold for donated blocks in effect for all LNP-capable companies.

· The CPUC staff should meet with paging companies to explore options for their consolidating numbering resources in fewer rate centers, as well as other methods of reducing the number of stranded numbers held by paging companies.

    3. Potential Block Contamination Abuses

When blocks are slightly more than 10% contaminated, those blocks cannot be donated to a pool under current pooling rules.Viewing the utilization data suggests, however, that companies have not generally followed practices of sequential numbering and filling blocks substantially before using new blocks. The CPUC's rules on sequential numbering and fill rate practices promulgated in Decision 00-07-052 are designed to ensure that companies efficiently use their numbers in the future. Fill rates mitigate contamination by requiring companies to use contaminated blocks up to 75% before they can receive additional blocks or prefixes. Sequential numbering minimizes contamination by requiring companies to begin assignment in the next thousand-block only after a 75% fill rate has been attained in the prior block. Where companies possess significant available numbers in a given rate center, these two efficiency measures could prevent the opening of new blocks or prefixes.

Companies reported utilization data as of December 31, 2000. The sequential numbering and fill rate decision was issued in July 2000. Some of these practices of non-sequential numbering and not filling blocks substantially before using new blocks may have happened before the July 2000 decision. TD does not expect companies to continue contaminating blocks unnecessarily.

· The CPUC should monitor compliance with its fill rate and sequential numbering policies through future number utilization filings and audits.

· The CPUC should establish penalties for non-compliance with fill rate and sequential numbering policies adopted in Decision 00-07-052.31

    4. Reclamation of Prefixes

Decision 00-07-052 directed companies to return prefixes that are held unused for more than six months. As shown in Table 2-7, wireline carriers and wireless carriers hold 748,000 unused numbers and 265,000 unused numbers, respectively, in 0% contaminated blocks. Of these unused numbers, 360,000 are in 36 whole prefixes32 that are completely uncontaminated, i.e., spare prefixes, while 653,000 numbers are in uncontaminated blocks that are scattered throughout many different prefixes. The following table shows the breakdown between wireless and wireline carriers.

Table 2-7

Breakdown of Numbers in 0% Contaminated Blocks

 

Total Avail. Nos. in

0% Contam. Blocks

    Avail. Nos. in

    Spare Prefixes

Avail. Nos. in Differing Prefixes

Wireline Carriers

748,000

    240,000

508,000

Wireless Carriers

    265,000

    120,000

    145,000

Total

1,013,000

    360,000

653,000

The 360,000 numbers in 36 spare prefixes can possibly be reclaimed if not used within six months. However, as a result of the FCC's March 31, 2000 (first) NRO Order, the NANPA no longer has sole authority to reclaim unused prefixes. The FCC granted authority to state regulatory commissions to investigate and determine whether prefix holders have activated prefixes within the allowed time frames, and directed the NANPA to abide by the state commission's determination to reclaim a prefix if the state commission is satisfied that the prefix holder has not activated the prefix within the time specified in the first NRO Order.33 Substantial cooperation between the CPUC and the NANPA will be required in order for the CPUC to exercise this new authority and determine whether a prefix should be reclaimed. Furthermore, the NANPA must still perform the mechanical steps to reclaim prefixes once the CPUC directs the NANPA to reclaim a prefix.

The NANPA has provided to the CPUC a list of companies that have failed to report whether their assigned prefix(es) have been placed in service. The CPUC issued Assigned Commissioner's Ruling Requiring Carriers to Comply With NXX Code Reclamation Rules, dated December 21, 2000. In this ruling, the CPUC instructed the delinquent companies to comply immediately. Companies are to inform the CPUC either that the prefixes have been placed in service or returned, that the company was incorrectly included in the NANPA's delinquent list, or the reasons the prefixes have not been placed in service. The CPUC will review the reasons and make a determination as to whether the prefixes must be returned or reclaimed by the NANPA, or whether to grant an extension of time to the company to place the prefixes in service. Any delinquent company that fails to comply will be subject to penalties and sanctions.

F. ANALYSIS OF THE 2.2 MILLION UNAVAILABLE NUMBERS

In the following sections, the TD recommends a series of policies designed to require companies to use unavailable numbers more efficiently. These policies would potentially free more numbers for use in the pool future or to be otherwise used by companies.

Companies report that 2.2 million numbers in the 213 area code are either assigned to customers or are used by companies for reserved, administrative, intermediate and aging purposes. Companies commonly refer to these numbers as "unavailable". Unavailable numbers include not only those actually in use by customers, but also the following categories:

· Reserved numbers - Numbers that are reserved in blocks for future use by specific customers;

· Administrative numbers - Numbers that companies use for their own internal use;

· Intermediate numbers - Numbers that are made available for use by another telecommunications carrier or non-carrier entity for the purpose of providing telecommunications service to an end user or customer; and

· Aging - Numbers from recently disconnected service, which are not reassigned during a fixed interval.

In its first NRO Order, the FCC ruled that companies must show that they have used a certain percentage of their existing inventory of numbers before they can obtain additional numbers in a given rate center. This order specified that companies' utilization rates will be calculated using only assigned numbers in the numerator. This method greatly increases companies' incentive to use numbers sparingly for purposes of reserved, administrative, intermediate, or aging numbers; none of those uses will raise a company's utilization rate and enable it to obtain additional numbers.

1. 1.52 Million Assigned Numbers

In the 213 area code, there are 1.52 million assigned numbers with 930,000 assigned to customers by wireline carriers and 590,000 assigned to customers by wireless carriers. Analysis of the utilization date submitted by wireline carriers reveals sharply differing utilization rates of ILECs and CLECs. While ILECs in the 213 area code are using 57% of their numbers (counting assigned numbers only), CLECs' data shows a utilization rate of only 10%. Likewise, analysis of the wireless carriers' data reveals sharply differing utilization rates of paging carriers and cellular/PCS companies. While cellular/PCS carriers in the 213 area code are using 38% of their numbers, paging carriers' data shows a utilization rate of only 26%. The percentages of assigned numbers to total numbers held by companies are shown in the table below.

Table 2-8

Number Utilization Rates

ILECs 0.79 1.40 56.7%

CLECs 0.14 1.32 10.4%

Wireline Carrier Subtotal 0.93 2.72 34.2%

Paging companies 0.23 0.91 25.7%

Cellular/PCS companies 0.36 0.94 37.9%

Wireless Carriers Subtotal 0.59 1.85 31.9%

      a. Non-Working Wireless

· Non-working wireless numbers should be treated as reserved numbers and limited to 180 days, after which they should become classified as available for assignment to customers.

· The CPUC should continue to monitor non-working wireless numbers in the near term by reviewing future utilization filings, and should include this category of numbers in any audits conducted of wireless carrier number use.

      b. Eliminating Interim Number Portability Releases Numbers for Reallocation

· The CPUC should adopt a schedule for transitioning INP arrangements to LNP in all California area codes.

· TD should investigate the whole prefix assigned to INP and reclaim the prefix if it is not being utilized.

      c. Expanded Use of the 555 Prefix Could Release Other Prefixes Dedicated to Special Uses

Historically, the telecommunications industry has designated certain prefixes for special uses, usually to an ILEC. These include numbers for recorded public information announcements such as time-of-day, weather forecasts, high-volume call in numbers, and emergency preparedness37 numbers. These prefixes are not made available for general commercial use, and thus numbers within these prefixes that are not in actual use lie vacant. In 1999, companies decided not to duplicate the special use prefixes in each area code. Concerned that this process could adversely affect the public, the CPUC directed that these prefixes should be duplicated in each new area code.

The utilization study shows that seven prefixes are dedicated for special uses: one each for directory assistance, high volume calling, time, weather, emergency preparedness, information provider service, and pseudo 800 service code. TD questions the necessity of assigning an entire prefix for each of the purposes listed above.

Similarly, expanded use of the 555 prefix throughout the state could result in more returned prefixes in other area codes. TD recommends that the CPUC initiate an investigation into broader use of the 555 prefix in California. The CPUC should further analyze the option of obtaining standard 555 numbers in every California area code to provide time, emergency preparedness, and weather information at no additional cost to customers.

· TD recommends that the CPUC initiate an investigation into the possibility of moving the numbers for time and emergency preparedness into the 555 prefix.

· TD recommends that the CPUC include in its investigation the broader use of the 555 prefix in California's area codes by providing standard 555 numbers in every California area code to provide time, emergency preparedness, and weather information.

    2. Reserved Numbers Are a Potential Source of Additional Numbers

Carriers "set aside" numbers for future use by customers.39 Previously, industry number assignment guidelines allowed companies to reserve a prefix for up to 18 months for customers' future use.40 The FCC's first NRO Order modified the number reservation period to 45 days. This 213 utilization study incorporated the FCC's 45-day requirement. The FCC later issued an extension until December 1, 2000 for companies to comply with the 45-day rule. 41 The extension allows companies time to upgrade their number tracking mechanisms, which tally the quantities of reserved numbers they hold. The FCC's second NRO Order on Reconsideration changed the number reservation period to 180 days. This took effect on December 29, 2000.42

Companies reported a total of 159,000 reserved numbers in the 213 utilization study.43 Wireline carriers reported a total of about 153,000 reserved numbers in the 213 area code, which constitute 6% of wireline carriers' numbers. Wireless carriers reported a total of 6,000 reserved numbers, which represents .3% of wireless carriers' numbers. As stated in Section D above, under the utilization rules promulgated in the FCC's First and Second NRO Orders, carriers now have a much stronger incentive to minimize the quantity of numbers they reserve for future use by customers, thus freeing more numbers for immediate assignment to customers, or for donation to a future number pool.

· The CPUC should monitor reserved number use for all companies by reviewing future utilization data to ensure companies are complying with the FCC's 180-day requirement.

3. Restrictions on Administrative Numbers Could Yield More Numbers

Administrative numbers are those not assigned to customers and are generally used for a wide range of applications for companies' internal use, including testing, internal business, and other network purposes. Companies reported about 86,000 administrative numbers in the 213 area code. Wireline carriers hold approximately 73,000 of these numbers and wireless carriers hold approximately 13,000 of them. These quantities of administrative numbers represent 5.3% of wireline carriers' total numbers and 1.5% of wireless carriers' total numbers.

The utilization study revealed that there is a potential for companies to over-assign administrative numbers within a particular thousand block, prefix or rate center in the 213 area code. The Los Angeles DA 10 rate center has about twice the amount of assigned numbers as the Los Angeles DA 07 rate center but they only have a difference of 293 numbers for administrative purposes. Given the variances in the levels of administrative numbers between companies and rate centers, it is unclear what basis companies use for placing numbers in this category. The CPUC should therefore pursue an investigation in this area.

In addition, some companies randomly assign administrative numbers and are thereby wasting number resources. Companies could conserve numbers by changing the way in which these types of numbers are assigned. Some companies randomly assigned administrative numbers in multiple thousand-blocks within the same prefix when they have available number resources to centralize those assignments within one or a few blocks. This practice means that both wireline and wireless carriers will already have contaminated multiple thousand-blocks and prevents them from donating blocks once they can participate in number pooling, or from other LNP-based conservation measures.

Also, some companies holding multiple prefixes in a given rate center randomly assign administrative numbers throughout different prefixes when they have the available number resources to centralize the assignment of these numbers in one prefix in that rate center. TD questions the need for companies to hold multiple prefixes in a given rate center, when they are using multiple prefixes to serve their internal purposes and not necessarily to serve customer needs.

As stated in Section D above, under the utilization rules promulgated in the FCC's First and Second NRO Orders, carriers now have a much stronger incentive to minimize the quantity of numbers they use for administrative purposes, thus freeing more numbers for immediate assignment to customers, or for donation to the number pool.

4. Intermediate Numbers

The "intermediate number" category was only recently introduced by the FCC in its first NRO Order. This category tracks numbers that companies make available for use by another telecommunications carrier or non-carrier entity. Companies reported a total of approximately 322,000 intermediate numbers in the 213 area code. Wireline carriers hold approximately 122,000 of those numbers and wireless carriers hold approximately 200,000. The quantity of intermediate numbers varied significantly among rate centers in the 213 area code. 44 Since the intermediate number category is new, the quantity of numbers reported by companies may increase over time as more companies become familiar with this category. TD notes that this number use category has the potential for abuse by companies if they use significant quantities of number resources for intermediate purposes. Therefore, TD recommends the CPUC continue to monitor intermediate number use.

Recommendation for Intermediate Numbers

· The CPUC should monitor intermediate number use for all companies by reviewing future utilization filings to test whether potential abuses in this reporting category occur.

      a. Type 1 Numbers

Wireline carriers allocate numbers for use by wireless carriers through Type 1 interconnection agreements.45 Because wireline and wireless carriers share responsibility for Type 1 numbers, both types of companies reported on these numbers. Wireline carriers report Type 1 numbers in the Intermediate category since they provide these numbers to another company. Wireline carriers also list the wireless carriers to whom they distributed ranges of numbers. Wireless carriers report on the numbers they received, placing them in the Assigned, Administrative, Reserved, Intermediate, Aging, or Available categories.

Record keeping of Type 1 numbers is inadequate because, more often than not, wireline carriers' reports disagreed with wireless Type 1 carriers' reports. In the 213 area code, over 75% of all Type 1 numbers are unaccounted for or mismatched.46 In some cases, wireless Type 1 carriers deny "owning" the numbers that wireline carriers report as distributed. In other cases, wireless Type 1 carriers go out of business and do not return their numbers to the wireline carrier. In either case, numbers are lying dormant, used by neither the wireline or wireless Type 1 carrier.

In today's scarce numbering environment, it is unacceptable to let numbers go unused because of inadequate record keeping. Wireline donor carriers currently do not monitor wireless Type 1 inventories, nor do they proactively reclaim unused Type 1 numbers from wireless carriers. TD recommends that wireline carriers perform a one-time inventory check on Type 1 numbers to confirm that the numbers they have distributed are acknowledged by the recipient wireless Type 1 carrier. If errors are discovered, the wireline carriers should count the numbers as part of their own inventories.

Improved Type 1 number management is particularly crucial because unlike numbers held by most wireless carriers, Type 1 numbers are eligible for number pooling.47 Therefore, once wireline carriers recover unused Type 1 numbers, these numbers could be made available for future pooling. The CPUC should recognize Type 1 numbers as a resource for number pooling and take steps to have wireline companies recover unused Type 1 numbers for donation to the number pool.

As described in Chapter 1, state and federal mandates require most companies to demonstrate efficient numbering practices before becoming eligible to obtain more numbers. In contrast, Type 1 wireless carriers have no check on their number use because they draw numbers directly from wireline companies, therefore avoiding the scrutiny of the official number administrator. TD recommends that Type 1 wireless carriers be subject to number conservation measures, and the CPUC should develop a system to ensure compliance.

Recommendations for Type 1 numbers:

· Wireline and wireless carriers should improve Type 1 number inventory management. Wireline carriers should perform a one-time inventory check of wireless Type 1 numbers to verify their records match the wireless Type 1 carriers' records. Companies should make inventory data available to the CPUC upon request. Wireline carriers should recover and add to their inventories any Type 1 numbers lying dormant.

· Type 1 carriers should be subject to number conservation techniques such as sequential numbering and fill rates. A system to ensure compliance with Type 1 number conservation measures should be developed.

· The Commission should consider Type 1 numbers as potential donations to the number pool. Excess and unused Type 1 numbers should be returned to the wireline carriers and either used to serve customers or donated to the number pool.

5. Aging Numbers

The FCC's first NRO Order defines aging numbers as disconnected numbers that are not available for assignment to another customer for a specified period of time. Consistent with the Industry Numbering Committee (INC) Guidelines, the CPUC adopted the FCC upper limits for aging numbers as 90 days for residential numbers and 365 days48 for business numbers. In the 213 area code, there are approximately 124,000 numbers in the aging category, representing about 5.6% of the total unavailable numbers.

Because Pacific Bell does not differentiate between residential and business customers in reporting aging numbers, it is uncertain whether Pacific is adhering to the maximum 90-day aging period for residential numbers, and whether, at the end of the 90-day period, Pacific is reassigning these numbers to the "available" category for nine months longer than is permissible under both FCC and CPUC rules. The FCC's NRO Orders do not require carriers to report their aging numbers broken down into residential and business categories. Since Pacific has not voluntarily provided this breakdown as requested in its data submissions for the CPUC's number utilization studies, TD staff should focus particular attention on the issue of Pacific's adherence to FCC and CPUC time limits on numbers in the aging category whenever it audits numbering data.

Recommendation for Aging Numbers

· Although the CPUC has required all companies to differentiate aging numbers between residential and business and track the two categories separately, Pacific Bell has not complied with these requirements. TD staff should check Pacific's adherence to FCC and CPUC time limits on numbers in the aging category when it audits numbering data.

CHAPTER THREE: NUMBER POOLING AND OTHER NUMBER CONSERVATION MEASURES

G. INTRODUCTION

Many of the recommendations in Chapter Two resulted directly from the analysis of the utilization data and address actions that the CPUC should undertake to make additional numbers available for either pooling or for the regular monthly lottery. The recommendations contained in this chapter suggest additional conservation measures as required by Public Utilities Code Section 7935(a). The CPUC could adopt the following conservation measures in the 213 area code and statewide: LNP-related actions, Unassigned Number Porting, Rate Center Consolidation, and prefix sharing. When applied, these conservation measures would result in uniform policies, which will cause companies to use numbers more efficiently across California and would minimize customer confusion.

H. NUMBER POOLING

Number pooling is an excellent method of number conservation. The CPUC worked aggressively to bring number pooling to California and the results have been dramatic. Pools are underway in nine area codes and five additional pools are scheduled to begin in 2001.

Number pooling has avoided the need to open prefixes and therefore has extended the life of area codes. Prior to pooling, 432 prefixes would have been opened in the 310, 408, 415, 650, 714, 818 and 909 area codes.49 In addition, the pool has satisfied the numbering needs of all companies participating in the pool almost entirely with donated blocks.50

Pooling benefits not only the public but the companies as well by reducing the time necessary to acquire numbering resources. Without pooling, activating new numbers takes at least 66 days.51 With number pooling, activating new numbers can be accomplished in three weeks.

1. More Accurate Forecasting Will Improve Number Pooling

Recommendations for Number Pooling

· The CPUC should work with industry groups and the Pooling Administrator to develop specific rules for companies pertaining to forecasting a six-month inventory when a number pool is authorized in a particular area code.

I. LACK OF LOCAL NUMBER PORTABILITY STANDS AS A KEY BARRIER TO POOLING

Recommendations for LNP

· The CPUC should continue to work with the FCC to enforce LNP capability mandates for all wireline carriers in the top 100 MSAs.

J. UNASSIGNED NUMBER PORTING

Unassigned Number Porting (UNP) is the term used to describe the transfer of unused numbers from one company to another. Like number pooling and the porting of assigned numbers from company to company, UNP is made possible by deployment of LNP. The primary benefit of UNP would be increased access to unused numbers stranded in carrier inventories. UNP would also strengthen competitively neutral access to public numbering resources by enabling companies with smaller inventories to access the inventories of companies with larger number holdings.

UNP would allow companies to transfer small increments of numbers between themselves. Various proposals have suggested limiting the increments to 25 or 100 numbers.59 Two efficiencies would be gained: 1) companies with smaller scale needs would be able to receive numbers in increments appropriate to meet their needs, and 2) unused numbers stranded in company inventories would be transferred to companies where they could be put to use.

Currently, companies receive unused numbers from the NANPA or the PA in increments of 10,000 numbers (prefixes) or 1,000 numbers (blocks). In areas without number pooling, prefixes held in company inventories that are not put to use within six months must be returned, but only if uncontaminated. If just one number has been used, the remaining 9,999 are stranded in the company inventory. In areas with number pooling, blocks are eligible for return only if 10% or less contaminated. For example, if a company receives 1000 numbers and only has need for 100 numbers, the remaining 900 numbers are eligible for return. However, if a company received 1000 numbers and only has need for 101 numbers, the remaining 899 numbers are ineligible for return and are stranded in the company inventory. UNP is one way to address the problem of stranded numbers.

The FCC has contemplated UNP but has so far declined to act.60 The FCC has not ruled out UNP as a conservation measure.61 In the absence of a voluntary company agreement to implement UNP, however, the CPUC could only implement UNP with FCC approval. Given the number conservation benefits to be had, the CPUC should petition the FCC for authority to undertake a UNP trial.

Recommendations for UNP

· The CPUC should petition the FCC for authority to implement UNP statewide.

· The CPUC should solicit comments in order to develop rules and practices necessary to implement UNP.

K. CONSOLIDATION OF RATE CENTERS TO MAXIMIZE NUMBER USE

California has roughly 750 rate centers, each of which is the approximate center of a 12-mile local calling area. With no input from the industry, the CPUC cannot begin to guess what approach would be most appropriate. For example, California could consolidate from 750 rate centers to 400, or to 200. Each of those possibilities would present different rate "impacts" for both companies and customers. Alternatively, rather than attempting to consolidate rate centers on a statewide basis, the CPUC could consider consolidating rate centers on an area code-by-area code basis. All rate centers in one area code, for example, could be consolidated into one rate center. This would eliminate both the uniform statewide local calling area of 12 miles and uniform statewide rates for each company, thus generating some amount of customer confusion as individuals travel throughout the state for business or social purposes, or relocate their home or business. Further, because companies would lose toll revenues when rate centers are consolidated and local calling areas expanded, the CPUC would need to address the question of which, if any, companies should be allowed to recover those lost revenues, and if so, how.62

Finally, rate center consolidation will mean direct, substantial, and permanent basic rate increases for many customers, unless the ILECs forgo their claim that RCC should be revenue neutral. Economics and Technology, a Boston consulting group, has projected that "...rate center consolidation in California could result in a per-access-line increase of $5.56 in basic monthly rates for California ILEC customers."63

This may not be an acceptable option, even though California presently has among the lowest local exchange rates in the country. And, if the ILECs continue to press for revenue neutrality, the very process of determining the amount of those revenues, as well as how those monies should be recovered and from what class(es) of customers, would constitute a rate design proceeding of significant scale and scope. Such a proceeding could consume a tremendous amount of CPUC, industry, and consumer representative resources, and take one to two years.64

Recommendation for Rate Center Consolidation

· The CPUC should undertake further investigation by ordering the telecommunications industry to develop a plan, within 180 days, for rate center consolidation.

L. SHARING PREFIXES MAY YIELD MORE EFFICIENT NUMBER USE

Recommendation for Sharing of Prefixes

· The CPUC should further explore sharing of prefixes as a means to more efficiently utilize numbers in all area codes.

CONCLUSION

Analyzing the utilization data provided by carriers has provided useful information regarding number availability and usage practices in the 213 area code. It also has offered insights into developing better public policies to improve efficiency of number use.

We now know that, of the approximately 7.9 million usable numbers in the 213 area code, approximately 5.8 million, or nearly three-fourths, presently are not in use. Despite the increasing demand for numbers, the 213 area code is not fully utilized. The data indicates that there is considerable room for growth within the existing 213 area code, and it is premature to consider splitting or overlaying the 213 area code at this time.

The CPUC already has directed carriers to employ measures to use the numbering resources in 213 more efficiently. Recently adopted fill rates and sequential numbering rules will ensure that carriers use their existing resources more fully and receive additional numbers only on an as-needed basis. When pooling takes effect in the 213 area code, all LNP-capable carriers will be given numbers expeditiously and in usable blocks. Allocating numbers in thousand-block increments rather than in full prefixes of 10,000 numbers will ensure that the numbering resources are used more efficiently, and can greatly extend the life of the existing area code. Implementing these more efficient numbering practices is an important first step, but more needs to be done.

In analyzing the carrier data, it is now clear that because of 1) past inefficiencies in numbering policies and practices, 2) the 10% contamination ceiling for block donations to pooling, and 3) the deferral of LNP capability for wireless carriers, 1.6 million numbers are not in use in 213 but cannot be reassigned to other carriers. Changes in contamination thresholds and requiring LNP capability for all carriers could make about 700,000 of these stranded numbers available for reassignment.

The CPUC should continue its collaborative process with the FCC and the telecommunications industry to implement Unassigned Number Porting, the development of non-geographic-specific area codes, and other measures that will more fully utilize numbers. The CPUC should begin implementation of the many number conservation and management practices found in the Recommendations section of this report. As a public resource, it is important that our numbering supplies are used as efficiently and effectively as possible.

APPENDIX A-1

DEFINITIONS FOR UTILIZATION STUDY

Administrative: Administrative numbers are numbers used by telecommunications carriers to perform internal administrative or operational functions necessary to maintain reasonable quality of service standards. Subcategories used in the Utilization Studies are:

Internal Business Purpose/Official Numbers: A number assigned by a service provider for its own internal business purposes

Test Numbers: Telephone numbers (TNs) assigned for inter-and intra-network testing purposes

Other Administrative Numbers (include only Location Routing Number, Temporary Local Directory Number and Wireless E911 ESRD/ESRK) where

Identical to a Local Routing Number (LRN): The ten-digit (NPA-XXX-XXXX) number assigned to a switch/point of interconnection (POI) used for routing in a permanent local number portability environment

Temporary Local Directory Number (TLDN): A number dynamically assigned on a per call basis by the serving wireless service provider to a roaming subscriber for the purpose of incoming call setup

Wireless E-911 ESRD/ESRK: A ten-digit number used for the purpose of routing an E911 call to the appropriate Public Service Answering Point (PSAP) when that call is originating from wireless equipment. The ESRD identifies the cell site and sector of the call origination in a wireless call scenario. The Emergency Services Routing Key (ESRK) uniquely identifies the call in a given cell site/sector and correlates data that is provided to a PSAP by different paths, such as the voice path and the Automatic Location Identification (ALI) data path. Both the ESRD and ESRK define a route to the proper PSAP. The ESRK alone, or the ESRD and/or Mobile Identification Number (MIN), is signaled to the PSAP where it can be used to retrieve from the ALI database, the mobile caller's call-back number, position and the emergency service agencies (e.g., police, fire, medical, etc.) associated with the caller's location. If a NANP telephone number is used as an ESRD or ESRK, this number cannot be assigned to a customer.

For convenience, "other administrative numbers" are reported as a group for purposes of the Utilization Study

APPENDIX A-1 (continued)

Aging Numbers: Aging numbers are disconnected numbers that are not available for assignment to another end user or customer for a specified period of time. Numbers previously assigned to residential customers may be aged for no more than 90 days. Numbers previously assigned to business customers may be aged for no more than 360 days. For purposes of the Utilization Study, carriers are to separately report aging numbers associated with residential service from those associated with business service.

Assigned Numbers: Assigned numbers are numbers working in the Public Switched Telephone Network under an agreement such as a contract or tariff at the request of specific end users or customers for their use, or numbers not yet working but having a customer service order pending. Numbers that are not yet working and have a service order pending for more than five days shall not be classified as assigned numbers. For purposes of the Utilization Studies, numbers for non-working wireless and for interim number portability are to be considered as assigned numbers in Part 1-Section A and separately identified in Part 2. See Interim Number Portability and Non-Working Wireless for definitions.

Available Numbers: Available numbers are numbers that are available for assignment to subscriber access lines, or their equivalents, within a switching entity or point of interconnection and are not classified as assigned, intermediate, administrative, aging, or reserved.

COC Type: Three-digit element defining the use of the Central Office Code (codes such as 0XX used for access tandem and testboard addressing or a "+" symbol that indicates direct routing to the designated switch in the NPA. 2XX-9XX values are considered NXXs.) Allowable codes in the LERG Destination Code by LATA and Tandem Homing Arrangements (LERG 6/9) are:

ATC = Access Tandem Code (0/1XX)

CDA = Customer Directory Assistance only (555 line numbers are assigned by

EOC = End Office Code

PLN = Planned Code - non-routable

PMC = Public Mobile Carrier (Type 2 Interconnected)

RCC = Radio Common Carrier (Dedicated Type 1 Interconnected)

SIC = Special 800 Service Code

SP1 = Service Provider - Miscellaneous Service (Type 1 Interconnected)

SP2 = Service Provider - Miscellaneous Service (Type 2 Interconnected)

TST = Standard Plant Test Code

Allowable codes in the LERG Oddball file (LERG6ODD only) are:

700 = 700 IntraLATA Presubscription

APPENDIX A-1 (continued)

AIN = Advanced Intelligent Network

BLG = Billing Only

BRD = Broadband

CTV = Cable Television

ENP = Emergency Preparedness

FGB = Feature Group B Access

HVL = High Volume

INP = Information Provider

LTC = Local Test Code

N11 = N11 Code

ONA = Open Network Architecture

PRO = Protected

RSV = Reserved

RTG = Routing Only

UFA = Unavailable for Assignment

Interim Number Portability (INP): The interim ability to move telephone service from one service provider to another service provider using Remote Call Forwarding (RCF), Direct Inward Dialing (DID), or equivalent means where:

· Remote Call Forwarding allows a customer to have a local telephone number in a distant location. Every time someone calls that number, that call is forwarded to the RCF customer in the distant location. Remote call forwarding is similar to call forwarding on a residential line, except that the RCF customer has no phone, no office and no physical presence in that location.

· A DID (Direct Inward Dial) trunk is a trunk from the Central office which passes the last two to four digits of the Listed Directory Number into the PBX, thus allowing the PBX to switch the call to and thus ring the correct extension" without the use of an attendant (Newton's Telecom Dictionary). Existing DID retail service is limited to PBX services. For purposes of providing INP, Pacific and GTEC will use the DID switch functionality to provide INP to any CLC customer regardless of the type of terminal equipment used on the customers' premises.

· For the purposes of the Utilization Study, each carrier must report the quantity of its assigned numbers that are dedicated to providing INP under Assigned Numbers in Part 1-Section A and separately identified in Part 2.

APPENDIX A-1 (continued)

Intermediate Numbers: Intermediate numbers are numbers that are made available for use by another telecommunications carrier or non-carrier entity for the purpose of providing telecommunications service to an end user or customer. Numbers ported for the purpose of transferring an established customer's service to another service provider shall not be classified as intermediate numbers. For Type 1 donor carriers, Type 1 numbers are to be reported as intermediate numbers in Part 1-Section A and detailed information is to be provided in Part 2 for the Utilization Studies. For Type 1 recipient donors, Type 1 numbers shall be reported in the Part 1-Section B for the Utilization Studies. For definition, see Type 1 numbers.

Local Number Portability: The ability to move a telephone number from one service provider to another service provider using LRN-LNP technology

Non-Working Wireless: this category is for wireless companies only to report numbers that they have already assigned to customer equipment, but are not yet working. For example, cellular carriers often pre-package a cellular telephone with an assigned telephone number for sale to customers. Those phone numbers are assigned, but are not actually activated until after the customer purchase is made. For the purposes of the Utilization Study, each carrier must report the quantity of its non-working wireless numbers under Assigned Numbers in Part 1-Section A and separately identified in Part 2.

OCN: Operating Company Number (OCN) assignments must uniquely identify the applicant. Relative to CO Code assignments, NECA-assigned Company Codes may be used as OCNs. Companies with no prior CO Code or Company Code assignments should contact NECA (973-884-8355) to be assigned a Company Code(s). Since multiple OCNs and/or Company codes may be associated with a given company, companies with prior assignments should direct questions regarding appropriate OCN usage to the Traffic Routing Administration (TRA) on 732-699-6700

Reserved Numbers: Reserved numbers are numbers that are held by service providers at the request of specific end users or customers for their future use. Numbers held for specific end users or customers for more than 45 days shall not be classified as reserved numbers.

Special Use NXX Codes: Certain NXX codes have traditionally been reserved or designated for special uses, and have not been available for assignment by carriers for general commercial use in providing telephone numbers to customers. These NXX prefixes are restricted to such special uses as recorded public information announcements of time-of-day and weather forecasts, high-volume call-in numbers, and emergency access numbers used by the Federal Emergency Management Administration (FEMA), etc.

APPENDIX A-1 (continued)

Type 1 Numbers: numbers pursuant to a Type 1 interconnection agreement. The Type 1 interconnection is a connection between a mobile/wireless service provider and an end office of another service provider for the purpose of originating and terminating traffic or for access to end user services (i.e. DA, Operator services, 911, etc). The interconnection consists of a facility between the mobile/wireless service provider and the end office, switch usage, and telephone numbers (only required if the mobile carrier wishes to receive originating (L/M) traffic). For the purposes of this Utilization Study, both mobile/wireless service providers who have received Type 1 numbers and those service providers who have provided Type 1 numbers to mobile/wireless service providers are asked to report on those numbers at the 1000 block level.

 

Appendix A-2

 

Companies Holding Prefixes in the 213 Area Code

1

2ND CENTURY COMMUNICATIONS, INC. - CA

2

AB CELLULAR HOLDING, LLC DBA AT&T WIRELESS

3

ADELPHIA BUSINESS SOLUTIONS OPERATIONS, INC.

4

AIRSTAR PAGING

5

AIRTOUCH CELLULAR - CA (VERIZON)

6

AIRTOUCH PAGING - CALIFORNIA (VERIZON MESSAGING)

7

ALLEGIANCE TELECOM, INC.-CA (no disk)

8

ARCH PAGING, INC.

9

AT&T - LOCAL - CA

10

AT&T FIXED WIRELESS GROUP

11

AT&T LOCAL

12

BROADBAND OFFICE COMMUNICATIONS, INC.

13

CCCCA, INC DBA CONNECT! - CA

14

CONXUS SPECTRUM, INC.

15

COOK TELECOM, INC.

16

DIGITCOM SERVICES, INC.

17

EAGLE COMMUNICATION, LLC - CA

18

ELECTRIC LIGHTWAVE

19

FIRSTWORLD ANAHEIM

20

FIRSTWORLD SO CA

21

FOCAL COMMUNICATIONS CORP OF CALIFORNIA

22

GLOBAL CROSSING LOCAL SERVICES- CA

23

GST PACIFIC LIGHTWAVE

24

GTE CALIFORNIA - CLEC

25

ICG TELECOM GROUP - CA

26

INTERMEDIA COMMUNICATIONS INC. - CA

27

KMC TELECOM V, INC. - CA

28

LEVEL 3 COMMUNICATIONS LLC - CA

29

MAP MOBILE COMMUNICATIONS, INC.

30

MCIMETRO, ATS, INC.

31

MEDIAONE TELECOMMUNICATIONS OF CALIFORNIA, INC. (AT&T BROADBAND)

32

MESSAGE CENTERS BEEPERS

33

METROCALL

34

MPOWER COMMUNICATIONS CORPORATION-LLC

35

NATIONWIDE PAGING, INC.

36

NET-TEL CORPORATION - CA

37

NETWORK SERVICES LLC

38

NEXTEL COMMUNICATIONS

39

NEXTLINK OF CALIFORNIA (XO)

40

NORTH COUNTY COMMUNICATIONS CORPORATION.-CA

41

O1 COMMUNICATIONS, INC.

42

OPTEL CALIFORNIA TELECOM, INC

43

PACIFIC BELL

44

PACIFIC BELL WIRELESS

45

PAC-WEST TELECOMM, INC.

46

PAETEC COMMUNICATIONS, INC. - CA

47

PAGECELL, INC. - CALIFORNIA

48

PAGENET

49

PAGERS PLUS DBA PAGEPROMPT, INC.

50

PAGING DIMENSIONS, INC.

51

PAGING PLUS

52

POINTE COMMUNICATIONS CORP - CA (TELSCAPE COMMUNICATIONS)

53

PRISM CALIFORNIA OPERATIONS LLC - CA

54

SATELLITE PAGING, INC.

55

SPRINT COMMUNICATIONS CO, LP-CA

56

SPRINT SPECTRUM LP

57

TELEPORT COMMUNICATIONS GROUP-LOS ANGELES

58

TELIGENT, INC.-CA

59

THE TELEPHONE CONNECTION OF LOS ANGELES, INC.

60

TIME WARNER COMMUNICATIONS AXS OF CALIFORNIA

61

TSR WIRELESS LLC

62

URJET BACKBONE NETWORK INC.

63

US TELEPACIFIC CORP - CA

64

WINSTAR WIRELESS, INC.-CA

65

WORLDCOM TECHNOLOGIES, INC.-CA

Appendix H

Table H-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pooling Updates (as of July 1, 2001)

 

2000 Q1

2000 Q2

2000 Q3

2000 Q4

2001 Q1

2001 Q2

Pool-to-Date

NPA

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Blocks Forecast by Carriers

Blocks Assigned by Pooling Administrator

Initial Blocks Forecasted by Carriers Pool-to-Date

Blocks Assigned by Pooling Administrator Pool-to-Date

310 (began 3/18/00)

225

73

199

29

286

26

198

33

175

16

201

9

1284

186

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

415 (began 7/29/00)

 

 

 

 

164

30

193

8

244

11

164

1

765

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

714 (began 9/29/00)

 

 

 

 

 

 

224

46

156

14

84

18

464

78

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

909 (began 12/1/0)

 

 

 

 

 

 

143

51

122

19

166

45

431

115

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

818 (began 3/24/01)

 

 

 

 

 

 

 

 

94

37

55

17

149

54

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

408 (began 5/12/01)

 

 

 

 

 

 

 

 

 

 

81

62

81

62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

650 (began 6/8/01)

 

 

 

 

 

 

 

 

 

 

7

2

7

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

510 (began 6/29/01)

 

 

 

 

 

 

 

 

 

 

no data available

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

TOTAL

 

 

 

 

 

 

 

 

 

 

 

 

3181

547

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

One Block = 1 thousand numbers

 

 

 

 

 

 

 

 

 

 

 

 

APPENDIX I

Summary of Recommendations

· The CPUC should direct the NANPA to withhold issuing prefixes to the non-reporting carriers until the required information is submitted. The CPUC should also consider levying fines or other penalties for failure to comply. If these prefixes are not being used for customers, the CPUC should direct the NANPA to reclaim the prefixes as soon as possible.

· The CPUC should petition the FCC to increase the contamination level for pooling to 25%. If the FCC grants the petition, the CPUC should increase the maximum contamination level of donated blocks from 10% to 25% for all LNP-capable carriers.

· When cellular and PCS companies become LNP capable in November 2002, the CPUC should direct those wireless carriers to donate to and participate in all number pooling trials in California, using the same contamination threshold for donated blocks in effect for all LNP-capable companies.

· The CPUC staff should meet with paging companies to explore options for their consolidating numbering resources in fewer rate centers, as well as other methods of reducing the number of stranded numbers held by paging companies.

· The CPUC should monitor compliance with its fill rate and sequential numbering policies through future number utilization filings and audits.

· The CPUC should establish penalties for non-compliance with fill rate and sequential numbering policies adopted in Decision 00-07-052.66

· Non-working wireless numbers should be treated as reserved numbers and limited to 180 days, after which they should become classified as available for assignment to customers.

· The CPUC should continue to monitor non-working wireless numbers in the near term by reviewing future utilization filings, and should include this category of numbers in any audits conducted of wireless carrier number use.

· The CPUC should adopt a schedule for transitioning INP arrangements to LNP in all California area codes.

· TD should investigate the whole prefix assigned to INP and reclaim the prefix if it is not being utilized.

· TD recommends that the CPUC initiate an investigation into the possibility of moving the numbers for time and emergency preparedness into the 555 prefix.

· TD recommends that the CPUC include in its investigation the broader use of the 555 prefix in California's area codes by providing standard 555 numbers in every California area code to provide time, emergency preparedness, and weather information.

· The CPUC should monitor reserved number use for all companies by reviewing future utilization data to ensure companies are complying with the FCC's 180-day requirement.

Recommendation for Intermediate Numbers

· The CPUC should monitor intermediate number use for all companies by reviewing future utilization filings to test whether potential abuses in this reporting category occur.

Recommendations for Type 1 numbers:

· Wireline and wireless carriers should improve Type 1 number inventory management. Wireline carriers should perform a one-time inventory check of wireless Type 1 numbers to verify their records match the wireless Type 1 carriers' records. Companies should make inventory data available to the CPUC upon request. Wireline carriers should recover and add to their inventories any Type 1 numbers lying dormant.

· Type 1 carriers should be subject to number conservation techniques such as sequential numbering and fill rates. A system to ensure compliance with Type 1 number conservation measures should be developed.

· The Commission should consider Type 1 numbers as potential donations to the number pool. Excess and unused Type 1 numbers should be returned to the wireline carriers and either used to serve customers or donated to the number pool.

Recommendation for Aging Numbers

· Although the CPUC has required all companies to differentiate aging numbers between residential and business and track the two categories separately, Pacific Bell has not complied with these requirements. TD staff should check Pacific's adherence to FCC and CPUC time limits on numbers in the aging category when it audits numbering data.

Recommendations for Number Pooling

· The CPUC should work with industry groups and the Pooling Administrator to develop specific rules for companies pertaining to forecasting a six-month inventory when a number pool is authorized in a particular area code.

Recommendations for LNP

· The CPUC should continue to work with the FCC to enforce LNP capability mandates for all wireline carriers in the top 100 MSAs.

Recommendations for UNP

· The CPUC should petition the FCC for authority to implement UNP statewide.

· The CPUC should solicit comments in order to develop rules and practices necessary to implement UNP.

Recommendation for Rate Center Consolidation

· The CPUC should undertake further investigation by ordering the telecommunications industry to develop a plan, within 180 days, for rate center consolidation.

Recommendation for Sharing of Prefixes

· The CPUC should further explore sharing of prefixes as a means to more efficiently utilize numbers in all area codes.

1 NANPA is an entity currently managed by NeuStar, Inc. The FCC chose NeuStar, formerly Lockheed Martin, to perform the functions of numbering administration and area code changes nationwide. 2 Including Type 1 carriers. Type 1 numbers are described in Chapter 2, Sec. D.4.a. 3 At present, only wireline carriers are required to participate in number pooling. The FCC has granted most wireless carriers an extension of time, until November 2002, to implement the technology that will support number pooling. The FCC has permanently exempted paging companies from implementing the technology necessary to pool. 4 The percentage of numbers in use in a particular block of 1,000 numbers is referred to as the "contamination" level. 5 Numbers may not add to 100% due to rounding. 6 Numbers many not add up to 100% due to rounding. 7 Today called the Incumbent Local Exchange Carrier (ILEC) 8 Today called Competitive Local Exchange Carriers (CLEC) 9 TD's analysis of available numbers in the remainder of this report uses 338 prefixes available for carriers as of the utilization data date of December 31, 2000. 10 See Chapter Three of this report for a discussion of LNP, and further discussion of number pooling. 11 FCC's Opinion and Order on Telephone Number Portability FCC 97-74, issued March 6, 1997 12 Cellular companies, PCS companies, and paging companies comprise the wireless category. 13 ILECs and CLECs 14 The CPUC revised the imminent exhaust criterion from three months to six months in Joint Assigned Commissioner and Administrative Law Judge's Ruling Implementing Revised Procedures to Conform to FCC Order, dated April 30, 2001. 15 Report and Order and Further Notice of Proposed Rulemaking, CC Docket No. 99-200 FCC 00-104 (released March 31, 2000). 16 Wireline carriers include ILECs and CLECs. 17 A further breakdown of the 2.4 million available numbers held by carriers is shown in Appendix B, Table B-1. 18 Type 1 carriers are not considered wireline or wireless companies. Type 1 numbers are programmed in the wireline company's end office, but are used by a wireless company. For further description of Type 1 carriers, see Section D.4.a. 19 4.0 million numbers are comprised of 0.6 million estimated pooling donations by companies plus 3.4 million available through the lottery. 20 Numbers do not all add due to rounding. 21 The recommendations include receiving authority from the FCC to increase contamination threshold (25%) for pooling, recovering blocks from special-use prefixes, recovering unused numbers from non-LNP-capable carriers and Type 1 carriers, and requiring wireless carriers to participate in pooling, as described later in this report. 22 See Appendix B, Table B-2 for a detailed breakout of the 4.7 million numbers. 23 Although all wireline carriers are required to be LNP capable in rate centers within the top 100 MSAs, three wireline carriers remain non-LNP capable. 24 10% or less contaminated means that out of 1,000 numbers in a block, 100 numbers or fewer have been classified as unavailable. 25 Future need may include serving new customers or offering new services. 26 See Footnote on Table B-2 in Appendix B for the derivation of this estimate. 27 See Table B-1 in Appendix B. These 94,919 are comprised of 40,712 numbers from blocks that are 10-15% contaminated, 32,252 from 15-20% contaminated, 21,955 from 20-25% contaminated, and 198, 915 numbers from blocks that are more than 25% contaminated. Later in this chapter, TD recommends additional steps that can be implemented to make more of these 290,000 numbers available for number pooling. 28 INC's Thousand Block (NXX-X) Pooling Administration Guidelines, dated January 10, 2000, state that carriers should donate specified thousand-blocks. 29 Additional numbers from the last three columns of Table 2-5: 40,712 + 32,252 + 21,955 = 94,919. 30 See footnote 3 of Table B-2, Appendix B, for the derivation of this estimate. 31 See Chapter 1 for the discussion of Decision 00-07-052. 32 This includes the four prefixes held by the three companies that did not report utilization data. 33 FCC 00-104, Paragraphs 237, 238, and 241 34 The FCC's First NRO Order stated, "Numbers such as dealer number pools should be included as a subcategory of intermediate numbers." The definitions in the FCC's NRO Orders will govern companies' NRUF submissions and utilization requirements. 35 Remote Call Forwarding allows a customer to have a local telephone number in a distant location. RFC is similar to call forwarding on a residential line, except that the RCF customer has no phone, no office and no physical presence in that location. Direct Inward Dialing uses a trunk from the central office which passes the last two to four digits of the Listed Directory Number into the PBX, thus allowing the PBX to switch the call to the correct extension without the use of an attendant. Existing DID retail service is limited to PBX services. For purposes of providing INP, DID switch functionality is used to provide INP to any CLC customer regardless of the type of terminal equipment used on the customer's premises. 36 However, five wireline carriers in the 213 area code still remain non-LNP capable in one or more of the 3 rate centers in the 213 area code that are located within one of the top 100 MSAs. 37 The emergency preparedness prefixes are for services other than 911. 38 The number used for inter-area code directory assistance, which is uniform throughout California, is 1-XXX- 555-1212. This number has been designated for this use at the federal level. 39 An example would be a customer request for 2,500 numbers to be used in 2000, coupled with a request to have the next 2,500 numbers in sequence "reserved" for the customer to use in 2001. 40 Central Office Code (NXX) Assignment Guidelines, prepared by the Industry Numbering Committee, January 27, 1999 version, Section 4.4. 41 FCC Order 00-280, CC Docket No. 99-200, adopted and released on July 31, 2000. 42 See FCC Order 00-129, Paragraph 114 43 See Appendix D for a breakdown of reserved numbers reported in the 213 NPA by rate center. 44 See Appendix F for a breakdown of intermediate numbers held by wireline and wireless carriers. 45 Type 1 numbers are programmed in the wireline carrier's end office, but are used by a wireless carrier. 46 127,050 out of a total of 168,050 Type 1 numbers are unaccounted for or mismatched. 47 Type 1 numbers given to wireless carriers are from prefixes in which LNP has already been initiated by the wireline carriers. Because Type 1 numbers reside in the wireline carrier's end office, Type 1 numbers are LNP-capable and thus suited for pooling. 48 In the first NRO Order, both 360 days and 365 days were used as the time period for aging business numbers. In a clarifying order, the FCC adopted 365 days as the aging period for business numbers. When the CPUC sent out the parameters for utilization data for this study, the 360 day time period for aging business numbers was used. In order to be consistent with the time frames the FCC adopted, the CPUC is now using the 365 time period for aging business numbers. 49 As of July 3, 2001. 50 One prefix was opened in the 310 area code to supply numbers to the pool, and two prefixes were opened in the 909 area code to supply numbers to the pool. Several prefixes have been opened for LRN purposes. 51 Before a whole prefix is activated, the prefix must be first listed for 66 days in the Local Exhange Routing Guide (LERG), stating the rate center where the prefix will be located. 52 Data can be found in Pooling Appendix. 53 Sections 6.1.4 & 6.1.5 in INC 99-0127-023, January 10, 2000 54 FCC 96-286 in CC Docket No. 95-116. 55 A third company lacks LNP capability in one switch in the 213 area code. Even if this switch were LNP capable, no additional numbers would be eligible for pooling. 56 CPUC Joint Assigned Commissioner's and Administrative Law Judge's Ruling Regarding Lottery Eligibility and Number Pooling Requirements on July 26, 2001. 57 FCC 99-19, WT Docket 98-229; CC Docket No. 95-116, Released: February 9, 1999. Paging companies are indefinitely exempt from becoming LNP-capable. 58 Further Comments of the California Public Utilities Commission and the People of the State of California in CC Docket No. 99-200, submitted May 19, 2000. 59 See INC Contribution #336R of September 29, 2000, "UNP Architecture With Minimal Administrative Structure" and Focal and MCIWorldcom's Report on UNP Trial. 60 NRO Order, FCC 00-104, CC Docket 99-200, ¶ 230. "We reiterate our finding that UNP and ITN [individual telephone number pooling] are not yet sufficiently developed for adoption as nationwide numbering resource optimization measures and conclude that ITN and UNP should not be mandated at this time." 61 See ¶ 231: "We permit carriers, however, to engage voluntarily in UNP where it is mutually agreeable and where no public safety or network reliability concerns have been identified." 62 For example, while the ILECs still control roughly 95% of the residential toll market, competitors have succeeded in making significant inroads into the business toll market, where the ILECs now hold only 50% of the market. If the CPUC were to decide that the ILECs should be "made whole" for any lost toll revenues, then other companies legitimately could demand a mechanism to make them whole as well. Alternatively, if the competitors cannot practically be reimbursed for lost revenues, then as a policy matter, the CPUC must decide if it is reasonable to allow only the ILECs to recover such revenue.

63 "Where Have All the Numbers Gone?" (Second Edition), The Ad Hoc Telecommunications Users Committee, prepared by Economics and Technology, Inc., June 2000. The estimate of $5.56 may be conservative.

64 The last major rate design proceeding undertaken for Pacific Bell and Verizon, then GTEC, was the Implementation and Rate Design (IRD) phase of the New Regulatory Framework proceeding, 1.87-l l-033. The IRD phase took three years to complete. 65 Prior to the opening of a number pool, all companies requesting telephone numbers get prefixes from the NANPA. With pooling, only non-LNP-capable carriers receive prefixes from the NANPA, while LNP-capable carriers receive thousand-number blocks from the pooling administrator. 66 See Chapter 1 for the discussion of Decision 00-07-052.

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