NORTHRIDGE prefixes in area code 818
NANPA records 38 assigned NXX blocks to rate center NORTHRIDGE in area code 818, 4.9% of the 781 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 PACIFIC BELL (22), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (4), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2007-03-21 and the most recent 2015-02-23. 20 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 747 – 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 |
|---|---|---|---|---|
| 818-280 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 818-341 | AT&T PACIFIC BELL | – | no | yes |
| 818-349 | AT&T PACIFIC BELL | – | no | yes |
| 818-350 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 818-357 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 818-407 | AT&T PACIFIC BELL | – | no | yes |
| 818-428 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 818-435 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 818-477 | AT&T AT&T - LOCAL | – | yes | yes |
| 818-527 | T-Mobile METROPCS NETWORKS, LLC | 2009-01-12 | yes | yes |
| 818-534 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 818-576 | AT&T PACIFIC BELL | – | yes | yes |
| 818-586 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | no | yes |
| 818-626 | T-Mobile METROPCS NETWORKS, LLC | 2007-03-21 | yes | yes |
| 818-671 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 818-677 | AT&T PACIFIC BELL | – | no | yes |
| 818-678 | AT&T PACIFIC BELL | – | yes | yes |
| 818-700 | AT&T PACIFIC BELL | – | no | yes |
| 818-701 | AT&T PACIFIC BELL | – | no | yes |
| 818-709 | AT&T PACIFIC BELL | – | no | yes |
| 818-717 | AT&T PACIFIC BELL | – | yes | yes |
| 818-718 | AT&T PACIFIC BELL | – | no | yes |
| 818-721 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 818-725 | AT&T PACIFIC BELL | – | yes | yes |
| 818-727 | AT&T PACIFIC BELL | – | no | yes |
| 818-734 | AT&T PACIFIC BELL | – | no | yes |
| 818-739 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 818-772 | AT&T PACIFIC BELL | – | no | yes |
| 818-773 | AT&T PACIFIC BELL | – | no | yes |
| 818-775 | AT&T PACIFIC BELL | – | no | yes |
| 818-812 | IP HORIZON LLC | – | yes | yes |
| 818-818 | T-Mobile T-MOBILE USA, INC. | 2015-02-23 | yes | yes |
| 818-882 | AT&T PACIFIC BELL | – | no | yes |
| 818-885 | AT&T PACIFIC BELL | – | no | yes |
| 818-886 | AT&T PACIFIC BELL | – | no | yes |
| 818-960 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2014-06-19 | yes | yes |
| 818-993 | AT&T PACIFIC BELL | – | yes | yes |
| 818-998 | AT&T PACIFIC BELL | – | 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 |
|---|---|---|---|
| PACIFIC BELL | AT&T | 22 | 57.9% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 4 | 10.5% |
| T-MOBILE USA, INC. | T-Mobile | 2 | 5.3% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 2 | 5.3% |
| METROPCS NETWORKS, LLC | T-Mobile | 2 | 5.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 2.6% |
| PAETEC ITEL, LLC | Windstream | 1 | 2.6% |
| AT&T - LOCAL | AT&T | 1 | 2.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 2.6% |
| IP HORIZON LLC | – | 1 | 2.6% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 2.6% |
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 NORTHRIDGE in area code 818?
38 blocks: 280, 341, 349, 350, 357, 407, 428, 435, 477, 527, 534, 576 and 26 more, all listed in the table above.
Which carriers have numbers in NORTHRIDGE?
PACIFIC BELL (22 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (4 blocks), T-MOBILE USA, INC. (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (2 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 NORTHRIDGE 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.