MIRA LOMA prefixes in area code 951
NANPA records 20 assigned NXX blocks to rate center MIRA LOMA in area code 951, 2.9% 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. 12 holders hold those blocks, the largest being PACIFIC BELL (5), NEW CINGULAR WIRELESS PCS, LLC (4), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2005-02-14 and the most recent 2026-04-20. 17 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 951-332 | Charter CHARTER IP ENABLED SERVICES, LLC | 2005-02-14 | yes | yes |
| 951-360 | AT&T PACIFIC BELL | – | no | yes |
| 951-361 | AT&T PACIFIC BELL | – | yes | yes |
| 951-362 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 951-416 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2016-08-25 | yes | yes |
| 951-456 | T-Mobile T-MOBILE USA, INC. | 2015-01-12 | yes | yes |
| 951-507 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-10-02 | yes | yes |
| 951-608 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2023-02-16 | yes | yes |
| 951-622 | FRACTEL, LLC | 2021-09-24 | yes | yes |
| 951-681 | AT&T PACIFIC BELL | – | no | yes |
| 951-685 | AT&T PACIFIC BELL | – | no | yes |
| 951-703 | T-Mobile T-MOBILE USA, INC. | 2009-12-17 | yes | yes |
| 951-727 | AT&T PACIFIC BELL | – | yes | yes |
| 951-749 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 951-752 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2024-10-24 | yes | yes |
| 951-790 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2006-04-04 | yes | yes |
| 951-812 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2026-04-20 | yes | yes |
| 951-903 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 951-934 | IP HORIZON LLC | – | yes | yes |
| 951-968 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| PACIFIC BELL | AT&T | 5 | 25% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 4 | 20% |
| T-MOBILE USA, INC. | T-Mobile | 2 | 10% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 1 | 5% |
| UTILITY TELECOM GROUP, LLC - CA | – | 1 | 5% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 1 | 5% |
| FRACTEL, LLC | – | 1 | 5% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 5% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 1 | 5% |
| IP HORIZON LLC | – | 1 | 5% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 5% |
Frequently asked
Which prefixes belong to MIRA LOMA in area code 951?
20 blocks: 332, 360, 361, 362, 416, 456, 507, 608, 622, 681, 685, 703 and 8 more, all listed in the table above.
Which carriers have numbers in MIRA LOMA?
PACIFIC BELL (5 blocks), NEW CINGULAR WIRELESS PCS, LLC (4 blocks), T-MOBILE USA, INC. (2 blocks), CHARTER IP ENABLED SERVICES, LLC (1 block), UTILITY TELECOM GROUP, LLC - CA (1 block), BANDWIDTH.COM CLEC, 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 MIRA LOMA 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.