HEMT HEMT prefixes in area code 951
NANPA records 38 assigned NXX blocks to rate center HEMT HEMT in area code 951, 5.5% 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. 11 holders hold those blocks, the largest being FRONTIER CALIFORNIA INC. (10), T-MOBILE USA, INC. (8), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7). The earliest assignment on record here is 2001-07-17 and the most recent 2026-08-21. 32 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 909 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 951-260 | T-Mobile T-MOBILE USA, INC. | 2006-01-26 | yes | yes |
| 951-282 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2007-08-17 | yes | yes |
| 951-305 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2010-09-08 | yes | yes |
| 951-306 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 951-330 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2010-01-08 | yes | yes |
| 951-357 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2013-03-22 | yes | yes |
| 951-380 | T-Mobile T-MOBILE USA, INC. | 2013-10-15 | yes | yes |
| 951-390 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2014-08-25 | yes | yes |
| 951-391 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-08-14 | yes | yes |
| 951-392 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2008-05-02 | yes | yes |
| 951-438 | T-Mobile T-MOBILE USA, INC. | 2015-03-09 | yes | yes |
| 951-480 | T-Mobile T-MOBILE USA, INC. | 2020-01-10 | yes | yes |
| 951-484 | T-Mobile T-MOBILE USA, INC. | 2016-06-29 | yes | yes |
| 951-492 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 951-502 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2018-05-15 | yes | yes |
| 951-537 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 951-585 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2021-07-29 | yes | yes |
| 951-590 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2021-07-29 | yes | yes |
| 951-593 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2021-08-31 | yes | yes |
| 951-633 | FRACTEL, LLC | 2020-07-02 | yes | yes |
| 951-634 | T-Mobile METROPCS NETWORKS, LLC | 2001-07-17 | yes | yes |
| 951-641 | T-Mobile T-MOBILE USA, INC. | 2023-07-13 | yes | yes |
| 951-652 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 951-658 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 951-663 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2005-04-21 | yes | yes |
| 951-669 | Onvoy ONVOY, LLC - CA | 2023-10-02 | yes | yes |
| 951-692 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-06-16 | yes | yes |
| 951-728 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2024-03-28 | yes | yes |
| 951-745 | T-Mobile T-MOBILE USA, INC. | 2024-10-09 | yes | yes |
| 951-765 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 951-766 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 951-791 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 951-804 | T-Mobile T-MOBILE USA, INC. | 2025-10-14 | yes | yes |
| 951-819 | Onvoy ONVOY, LLC - CA | 2026-08-21 | yes | no |
| 951-851 | Onvoy ONVOY, LLC - CA | 2022-10-18 | yes | yes |
| 951-925 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 951-927 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 951-929 | Frontier FRONTIER CALIFORNIA INC. | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| FRONTIER CALIFORNIA INC. | Frontier | 10 | 26.3% |
| T-MOBILE USA, INC. | T-Mobile | 8 | 21.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 7 | 18.4% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 4 | 10.5% |
| ONVOY, LLC - CA | Onvoy | 3 | 7.9% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 2.6% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 2.6% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 2.6% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 2.6% |
| FRACTEL, LLC | – | 1 | 2.6% |
| METROPCS NETWORKS, LLC | T-Mobile | 1 | 2.6% |
Frequently asked
Which prefixes belong to HEMT HEMT in area code 951?
38 blocks: 260, 282, 305, 306, 330, 357, 380, 390, 391, 392, 438, 480 and 26 more, all listed in the table above.
Which carriers have numbers in HEMT HEMT?
FRONTIER CALIFORNIA INC. (10 blocks), T-MOBILE USA, INC. (8 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7 blocks), BANDWIDTH.COM CLEC, LLC - CA (4 blocks), ONVOY, LLC - CA (3 blocks), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HEMT HEMT 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.