§ 52.20 47 CFR Ch. I (10–1–13 Edition)

for a particular area code; and devel- service provided by that entity, except oping the details of a proposed area to the extent that a technology- or code relief plan or plans. service-specific overlay is authorized (1) The entity or entities designated by the Commission. No group of tele- by the Commission to serve as central communications carriers shall be ex- office code administrator(s) shall ini- cluded from assignment of numbering tiate and develop area code relief plans resources in the existing area code, or for each area code in each state that be assigned such resources only from has not notified such entity or entities, the all services overlay area code, pursuant to paragraph (b)(2) of this sec- based solely on that group’s provision tion, that the state will handle such of a specific type of telecommuni- functions. cations service or use of a particular (2) Pursuant to paragraph (b)(1) of technology; and this section, a state commission must (ii) No area code overlay may be im- notify the entity or entities designated plemented unless there exists, at the by the Commission to serve as central time of implementation, mandatory office code administrator(s) for its ten-digit dialing for every telephone state that such state commission in- call within and between all area codes tends to perform matters related to in the geographic area covered by the initiation and development of area overlay area code. code relief planning efforts in its state. (4) A technology-specific or service- Notification shall be written and shall specific overlay, which occurs when a include a description of the specific new area code is introduced to serve functions the state commission intends the same geographic area as one or to perform. Where the NANP Adminis- more existing area code(s) and num- trator serves as the central office code bering resources in the new area code administrator, such notification must overlay are assigned to a specific tech- be made within 120 days of the selec- nology(ies) or service(s). State commis- tion of the NANP Administrator. sions may not implement a technology- (c) New area codes may be introduced specific or service-specific overlay through the use of: without express authority from the (1) A geographic , Commission. which occurs when the geographic area served by an area code in which there [61 FR 47353, Sept. 6, 1996, as amended at 64 are few or no central office codes left FR 63617, Nov. 16, 1998; 64 FR 62984, Nov. 18, 1999; 67 FR 6434, Feb. 12, 2002] for assignment is split into two or more geographic parts; (2) An area code boundary realign- Subpart C—Number Portability ment, which occurs when the boundary lines between two adjacent area codes SOURCE: 61 FR 38637, July 25, 1996, unless are shifted to allow the transfer of otherwise noted. Redesignated at 61 FR 47353, some central office codes from an area Sept. 6, 1996. code for which central office codes re- main unassigned to an area code for § 52.20 Thousands-block number pool- which few or no central office codes are ing. left for assignment; or (a) Definition. Thousands-block num- (3) An all services area code overlay, ber pooling is a process by which the which occurs when a new area code is 10,000 numbers in a central office code introduced to serve the same geo- (NXX) are separated into ten sequen- graphic area as one or more existing tial blocks of 1,000 numbers each (thou- area code(s), subject to the following sands-blocks), and allocated separately conditions: within a . (i) No all services area code overlay (b) General requirements. Pursuant to may be implemented unless all num- the Commission’s adoption of thou- bering resources in the new overlay sands-block number pooling as a man- area code are assigned to those entities datory nationwide numbering resource requesting assignment on a first-come, optimization strategy, all carriers, ex- first-serve basis, regardless of the iden- cept those exempted by the Commis- tity of, technology used by, or type of sion, must participate in thousands-

100

VerDate Mar<15>2010 14:12 Dec 31, 2013 Jkt 229208 PO 00000 Frm 00110 Fmt 8010 Sfmt 8010 Y:\SGML\229208.XXX 229208 ehiers on DSK2VPTVN1PROD with CFR Federal Communications Commission § 52.21

block number pooling where it is im- service, are interconnected with the plemented and in accordance with the public switched network, and utilize an national thousands-block number pool- in-network switching facility that en- ing framework and implementation ables such CMRS systems to reuse fre- schedule established by the Commis- quencies and accomplish seamless sion. hand-offs of subscriber calls. (c) Donation of thousands-blocks. (1) (e) The term database method means a All service providers required to par- number portability method that uti- ticipate in thousands-block number lizes one or more external databases pooling shall donate thousands-blocks for providing called party routing in- with ten percent or less contamination formation. to the thousands-block number pool for (f) The term downstream database the rate center within which the num- means a database owned and operated bering resources are assigned. by an individual carrier for the purpose (2) All service providers required to of providing number portability in con- participate in thousands-block number junction with other functions and serv- pooling shall be allowed to retain at ices. least one thousands-block per rate cen- (g) The term incumbent wide area SMR ter, even if the thousands-block is ten licensee has the same meaning as that percent or less contaminated, as an ini- term is defined in § 20.3 of this chapter. tial block or footprint block. (d) Thousands-Block Pooling Adminis- (h) The term ‘‘interconnected VoIP trator. (1) The Pooling Administrator provider’’ is an entity that provides shall be a non-governmental entity interconnected VoIP service as that that is impartial and not aligned with term is defined in 47 CFR 9.3. any particular in- (i) The term IP Relay provider means dustry segment, and shall comply with an entity that provides IP Relay as de- the same neutrality requirements that fined by 47 CFR 64.601. the NANPA is subject to under this (j) The term local exchange carrier part. means any person that is engaged in (2) The Pooling Administrator shall the provision of maintain no more than a six-month in- service or exchange access. For pur- ventory of telephone numbers in each poses of this subpart, such term does thousands-block number pool. not include a person insofar as such person is engaged in the provision of a [65 FR 37709, June 16, 2000, as amended at 66 commercial mobile service under 47 FR 9532, Feb. 8, 2001; 68 FR 43009, July 21, 2003] U.S.C. 332(c). (k) The term § 52.21 Definitions. administrator (LNPA) means an inde- As used in this subpart: pendent, non-governmental entity, not (a) The term 100 largest MSAs includes aligned with any particular tele- the 100 largest MSAs as identified in communications industry segment, the 1990 U.S. Census reports, as set whose duties are determined by the forth in the Appendix to this part, as NANC. well as those areas identified as one of (l) The term location portability means the largest 100 MSAs on subsequent up- the ability of users of telecommuni- dates to the U.S. Census reports. cations services to retain existing tele- (b) The term broadband PCS has the communications numbers without im- same meaning as that term is defined pairment of quality, reliability, or con- in § 24.5 of this chapter. venience when moving from one phys- (c) The term cellular service has the ical location to another. same meaning as that term is defined (m) The term long-term database meth- in § 22.99 of this chapter. od means a database method that com- (d) The term covered CMRS means plies with the performance criteria set broadband PCS, cellular, and 800/900 forth in § 52.3(a). MHz SMR licensees that hold geo- (n) The term number portability means graphic area licenses or are incumbent the ability of users of telecommuni- SMR wide area licensees, and offer cations services to retain, at the same real-time, two-way switched voice location, existing

101

VerDate Mar<15>2010 14:12 Dec 31, 2013 Jkt 229208 PO 00000 Frm 00111 Fmt 8010 Sfmt 8010 Y:\SGML\229208.XXX 229208 ehiers on DSK2VPTVN1PROD with CFR