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

POMONA prefixes in area code 909

NANPA records 51 assigned NXX blocks to rate center POMONA in area code 909, 6.5% of the 786 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 NEW CINGULAR WIRELESS PCS, LLC (13), FRONTIER CALIFORNIA INC. (9), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (5). The earliest assignment on record here is 2001-04-19 and the most recent 2023-10-11. 37 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 785, 840 – overlay codes cover the same geography, so a rate center is served by all of them.

51 assigned blocks – 6.5% of 909
15 holders of record
37 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
909-236 T-Mobile METROPCS NETWORKS, LLC 2007-03-21 yes yes
909-242 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2007-03-21 yes yes
909-263 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
909-282 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
909-298 Vonage VONAGE AMERICA LLC 2023-10-11 yes yes
909-326 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2013-04-11 yes yes
909-374 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-19 no yes
909-397 Frontier FRONTIER CALIFORNIA INC. – no yes
909-417 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2016-06-29 yes yes
909-455 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
909-461 T-Mobile METROPCS NETWORKS, LLC – yes yes
909-469 Frontier FRONTIER CALIFORNIA INC. – no yes
909-508 SHELCOMM 2018-07-31 no yes
909-524 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
909-525 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
909-538 T-Mobile T-MOBILE USA, INC. 2005-07-29 yes yes
909-576 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
909-618 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
909-620 Frontier FRONTIER CALIFORNIA INC. – no yes
909-622 Frontier FRONTIER CALIFORNIA INC. – no yes
909-623 Frontier FRONTIER CALIFORNIA INC. – no yes
909-629 Frontier FRONTIER CALIFORNIA INC. – no yes
909-630 Frontier FRONTIER CALIFORNIA INC. – yes yes
909-632 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
909-634 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 2005-10-20 yes yes
909-643 T-Mobile METROPCS NETWORKS, LLC 2006-07-26 yes yes
909-671 T-Mobile T-MOBILE USA, INC. 2015-02-23 yes yes
909-706 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
909-716 T-Mobile T-MOBILE USA, INC. 2019-02-27 yes yes
909-720 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-30 no yes
909-729 Onvoy ONVOY, LLC - CA 2016-10-10 yes yes
909-762 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2001-10-19 no yes
909-764 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2006-03-16 yes yes
909-766 Onvoy ONVOY, LLC - CA – yes yes
909-779 AT&T NEW CINGULAR WIRELESS PCS, LLC 2019-11-26 yes yes
909-784 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2005-10-27 yes yes
909-785 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-02-18 yes yes
909-802 AT&T PACIFIC BELL (COMPETITIVE) – yes yes
909-817 T-Mobile T-MOBILE USA, INC. 2020-07-28 yes yes
909-826 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-08-05 yes yes
909-837 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
909-847 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-09-08 yes yes
909-865 Frontier FRONTIER CALIFORNIA INC. – no yes
909-868 Frontier FRONTIER CALIFORNIA INC. – yes yes
909-896 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-30 no yes
909-924 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-10-28 yes yes
909-928 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-12-09 yes yes
909-940 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-12-16 yes yes
909-967 AT&T NEW CINGULAR WIRELESS PCS, LLC 2002-02-22 yes yes
909-973 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2002-08-21 yes yes
909-992 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2004-11-09 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
NEW CINGULAR WIRELESS PCS, LLC AT&T 13 25.5%
FRONTIER CALIFORNIA INC. Frontier 9 17.6%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 5 9.8%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 4 7.8%
T-MOBILE USA, INC. T-Mobile 4 7.8%
METROPCS NETWORKS, LLC T-Mobile 3 5.9%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 3 5.9%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 2 3.9%
ONVOY, LLC - CA Onvoy 2 3.9%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 2%
VONAGE AMERICA LLC Vonage 1 2%
SHELCOMM – 1 2%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 2%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 2%
PACIFIC BELL (COMPETITIVE) AT&T 1 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 POMONA in area code 909?

51 blocks: 236, 242, 263, 282, 298, 326, 374, 397, 417, 455, 461, 469 and 39 more, all listed in the table above.

Which carriers have numbers in POMONA?

NEW CINGULAR WIRELESS PCS, LLC (13 blocks), FRONTIER CALIFORNIA INC. (9 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (5 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (4 blocks), T-MOBILE USA, INC. (4 blocks), METROPCS NETWORKS, 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 POMONA 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 909

All 786 prefixes in 909