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

CULVERCITY prefixes in area code 424

NANPA records 22 assigned NXX blocks to rate center CULVERCITY in area code 424, 4.8% of the 460 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. 11 holders hold those blocks, the largest being ONVOY, LLC - CA (5), BANDWIDTH.COM CLEC, LLC - CA (3), T-MOBILE USA, INC. (3). The earliest assignment on record here is 2006-06-19 and the most recent 2026-09-03. 22 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 code 310 – overlay codes cover the same geography, so a rate center is served by all of them.

22 assigned blocks – 4.8% of 424
11 holders of record
22 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
424-209 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2007-01-08 yes yes
424-258 Windstream PAETEC ITEL, LLC 2008-05-28 yes yes
424-298 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
424-326 Onvoy ONVOY, LLC - CA – yes yes
424-341 T-Mobile T-MOBILE USA, INC. 2013-12-09 yes yes
424-345 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2014-04-04 yes yes
424-361 AT&T AT&T ENTERPRISES, LLC 2014-09-09 yes yes
424-385 T-Mobile T-MOBILE USA, INC. 2015-01-20 yes yes
424-434 Charter TWC IP ENABLED SERVICES, LLC 2019-05-06 yes yes
424-455 FRACTEL, LLC 2020-05-28 yes yes
424-460 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2021-10-28 yes yes
424-474 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2022-06-29 yes yes
424-479 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA 2022-11-08 yes yes
424-501 Onvoy ONVOY, LLC - CA 2017-02-17 yes yes
424-523 T-Mobile T-MOBILE USA, INC. 2015-04-13 yes yes
424-532 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2015-06-04 yes yes
424-543 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
424-549 Onvoy ONVOY, LLC - CA 2025-03-13 yes yes
424-584 Onvoy ONVOY, LLC - CA 2026-09-03 yes yes
424-587 FRACTEL, LLC 2021-06-17 yes yes
424-603 AT&T AT&T ENTERPRISES, LLC 2006-06-19 yes yes
424-672 Onvoy ONVOY, LLC - CA – 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
ONVOY, LLC - CA Onvoy 5 22.7%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 3 13.6%
T-MOBILE USA, INC. T-Mobile 3 13.6%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 2 9.1%
AT&T ENTERPRISES, LLC AT&T 2 9.1%
FRACTEL, LLC – 2 9.1%
PAETEC ITEL, LLC Windstream 1 4.5%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 4.5%
TWC IP ENABLED SERVICES, LLC Charter 1 4.5%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 1 4.5%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 4.5%

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 CULVERCITY in area code 424?

22 blocks: 209, 258, 298, 326, 341, 345, 361, 385, 434, 455, 460, 474 and 10 more, all listed in the table above.

Which carriers have numbers in CULVERCITY?

ONVOY, LLC - CA (5 blocks), BANDWIDTH.COM CLEC, LLC - CA (3 blocks), T-MOBILE USA, INC. (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (2 blocks), AT&T ENTERPRISES, LLC (2 blocks), FRACTEL, LLC (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CULVERCITY 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 424

All 460 prefixes in 424