NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

CMTN CMTN prefixes in area code 562

NANPA records 45 assigned NXX blocks to rate center CMTN CMTN in area code 562, 6.4% of the 702 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 15 holders hold those blocks, the largest being PACIFIC BELL (15), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (5), NEW CINGULAR WIRELESS PCS, LLC (4). The earliest assignment on record here is 2001-04-13 and the most recent 2001-06-20. 27 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 310, 424 – overlay codes cover the same geography, so a rate center is served by all of them.

45 assigned blocks – 6.4% of 562
15 holders of record
27 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
562-220 AT&T PACIFIC BELL – yes yes
562-223 33 WIRELESS INC. – no yes
562-232 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
562-238 Spok SPOK, INC. – no yes
562-251 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
562-258 33 WIRELESS INC. – no yes
562-259 AT&T PACIFIC BELL – yes yes
562-272 AT&T PACIFIC BELL – no yes
562-295 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
562-297 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
562-333 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
562-361 Windstream PAETEC ITEL, LLC – yes yes
562-363 Charter TWC IP ENABLED SERVICES, LLC – yes yes
562-398 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
562-408 AT&T PACIFIC BELL – no yes
562-415 Windstream PAETEC ITEL, LLC – yes yes
562-443 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
562-470 Charter CHARTER IP ENABLED SERVICES, LLC – yes yes
562-529 AT&T PACIFIC BELL – no yes
562-531 AT&T PACIFIC BELL – no yes
562-543 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
562-582 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
562-601 AT&T PACIFIC BELL – no yes
562-602 AT&T PACIFIC BELL – no yes
562-616 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2001-04-13 yes yes
562-618 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-16 no yes
562-630 AT&T PACIFIC BELL – no yes
562-633 AT&T PACIFIC BELL – no yes
562-634 AT&T PACIFIC BELL – no yes
562-663 AT&T PACIFIC BELL – yes yes
562-722 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
562-748 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
562-750 UTILITY TELECOM GROUP, LLC - CA – yes yes
562-775 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
562-788 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-06-20 yes yes
562-790 AT&T PACIFIC BELL – yes yes
562-791 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
562-792 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
562-808 AT&T PACIFIC BELL – yes yes
562-817 AT&T PACIFIC BELL – yes yes
562-877 Spok SPOK, INC. – no yes
562-878 Spok SPOK, INC. – no yes
562-884 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-16 no yes
562-889 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-16 no yes
562-894 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
PACIFIC BELL AT&T 15 33.3%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 5 11.1%
NEW CINGULAR WIRELESS PCS, LLC AT&T 4 8.9%
SPOK, INC. Spok 3 6.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 3 6.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 6.7%
33 WIRELESS INC. – 2 4.4%
PAETEC ITEL, LLC Windstream 2 4.4%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 2 4.4%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 2.2%
TWC IP ENABLED SERVICES, LLC Charter 1 2.2%
CHARTER IP ENABLED SERVICES, LLC Charter 1 2.2%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 2.2%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 2.2%
UTILITY TELECOM GROUP, LLC - CA – 1 2.2%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to CMTN CMTN in area code 562?

45 blocks: 220, 223, 232, 238, 251, 258, 259, 272, 295, 297, 333, 361 and 33 more, all listed in the table above.

Which carriers have numbers in CMTN CMTN?

PACIFIC BELL (15 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (5 blocks), NEW CINGULAR WIRELESS PCS, LLC (4 blocks), SPOK, INC. (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CMTN CMTN a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 562

All 702 prefixes in 562