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

ELSINORE prefixes in area code 951

NANPA records 22 assigned NXX blocks to rate center ELSINORE in area code 951, 3.2% of the 696 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. 10 holders hold those blocks, the largest being FRONTIER CALIFORNIA INC. (5), BANDWIDTH.COM CLEC, LLC - CA (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (3). The earliest assignment on record here is 2005-06-03 and the most recent 2024-10-24. 17 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

22 assigned blocks – 3.2% of 951
10 holders of record
17 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
951-226 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2007-04-22 yes yes
951-228 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2012-11-16 yes yes
951-245 Frontier FRONTIER CALIFORNIA INC. – no yes
951-253 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
951-285 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
951-291 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2010-04-05 yes yes
951-399 Charter TWC IP ENABLED SERVICES, LLC 2013-03-27 yes yes
951-409 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2016-07-01 yes yes
951-457 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2015-02-16 yes yes
951-459 AT&T NEW CINGULAR WIRELESS PCS, LLC 2017-11-08 yes yes
951-471 Frontier FRONTIER CALIFORNIA INC. – yes yes
951-498 T-Mobile METROPCS NETWORKS, LLC 2019-03-15 yes yes
951-579 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2005-06-03 yes yes
951-583 AT&T NEW CINGULAR WIRELESS PCS, LLC 2021-04-29 yes yes
951-609 Frontier FRONTIER CALIFORNIA INC. – yes yes
951-614 Onvoy ONVOY, LLC - CA 2022-08-05 yes yes
951-620 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2022-10-21 yes yes
951-670 T-Mobile METROPCS NETWORKS, LLC 2023-10-09 yes yes
951-674 Frontier FRONTIER CALIFORNIA INC. – no yes
951-678 Frontier FRONTIER CALIFORNIA INC. – no yes
951-748 AT&T NEW CINGULAR WIRELESS PCS, LLC 2024-10-24 yes yes
951-805 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no 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
FRONTIER CALIFORNIA INC. Frontier 5 22.7%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 4 18.2%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 3 13.6%
NEW CINGULAR WIRELESS PCS, LLC AT&T 3 13.6%
METROPCS NETWORKS, LLC T-Mobile 2 9.1%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 4.5%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 4.5%
TWC IP ENABLED SERVICES, LLC Charter 1 4.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 4.5%
ONVOY, LLC - CA Onvoy 1 4.5%

Frequently asked

Which prefixes belong to ELSINORE in area code 951?

22 blocks: 226, 228, 245, 253, 285, 291, 399, 409, 457, 459, 471, 498 and 10 more, all listed in the table above.

Which carriers have numbers in ELSINORE?

FRONTIER CALIFORNIA INC. (5 blocks), BANDWIDTH.COM CLEC, LLC - CA (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (3 blocks), NEW CINGULAR WIRELESS PCS, LLC (3 blocks), METROPCS NETWORKS, LLC (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ELSINORE 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 951

All 696 prefixes in 951