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

SUN CITY prefixes in area code 951

NANPA records 22 assigned NXX blocks to rate center SUN CITY 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (8), FRONTIER CALIFORNIA INC. (5), ONVOY, LLC - CA (2). The earliest assignment on record here is 2006-09-13 and the most recent 2026-09-09. 18 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 620 – overlay codes cover the same geography, so a rate center is served by all of them.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
951-244 Frontier FRONTIER CALIFORNIA INC. – no yes
951-246 Frontier FRONTIER CALIFORNIA INC. – yes yes
951-301 Frontier FRONTIER CALIFORNIA INC. – no yes
951-309 MCC TELEPHONY OF THE WEST, LLC - CA 2011-02-15 yes yes
951-370 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2013-03-29 yes yes
951-430 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2016-05-27 yes yes
951-434 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA 2014-09-24 yes yes
951-458 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2015-07-20 yes yes
951-516 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2019-11-27 yes yes
951-566 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
951-606 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2021-11-22 yes yes
951-615 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2022-09-02 yes yes
951-639 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
951-672 Frontier FRONTIER CALIFORNIA INC. – no yes
951-679 Frontier FRONTIER CALIFORNIA INC. – no yes
951-718 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2024-01-17 yes yes
951-723 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
951-746 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2006-09-13 yes yes
951-754 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2024-12-06 yes yes
951-821 Onvoy ONVOY, LLC - CA 2008-06-24 yes yes
951-825 Onvoy ONVOY, LLC - CA 2026-09-09 yes no
951-953 Charter ONVOY SPECTRUM, LLC 2023-04-12 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 8 36.4%
FRONTIER CALIFORNIA INC. Frontier 5 22.7%
ONVOY, LLC - CA Onvoy 2 9.1%
MCC TELEPHONY OF THE WEST, LLC - CA – 1 4.5%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 4.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 4.5%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 4.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 4.5%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 4.5%
ONVOY SPECTRUM, LLC Charter 1 4.5%

Frequently asked

Which prefixes belong to SUN CITY in area code 951?

22 blocks: 244, 246, 301, 309, 370, 430, 434, 458, 516, 566, 606, 615 and 10 more, all listed in the table above.

Which carriers have numbers in SUN CITY?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (8 blocks), FRONTIER CALIFORNIA INC. (5 blocks), ONVOY, LLC - CA (2 blocks), MCC TELEPHONY OF THE WEST, LLC - CA (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1 block), 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 SUN CITY 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