PACIFICA prefixes in area code 650
NANPA records 18 assigned NXX blocks to rate center PACIFICA in area code 650, 2.5% of the 717 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 (4), T-MOBILE USA, INC. (4), ONVOY, LLC - CA (2). The earliest assignment on record here is 2001-08-22 and the most recent 2026-09-03. 15 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 |
|---|---|---|---|---|
| 650-290 | T-Mobile METROPCS, INC. | 2001-08-22 | yes | yes |
| 650-355 | AT&T PACIFIC BELL | – | no | yes |
| 650-359 | AT&T PACIFIC BELL | – | no | yes |
| 650-420 | T-Mobile T-MOBILE USA, INC. | 2018-08-08 | yes | yes |
| 650-451 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 650-501 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2019-02-08 | yes | yes |
| 650-516 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 650-557 | AT&T PACIFIC BELL | – | yes | yes |
| 650-661 | T-Mobile T-MOBILE USA, INC. | 2023-05-08 | yes | yes |
| 650-663 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-12-28 | yes | yes |
| 650-675 | T-Mobile T-MOBILE USA, INC. | 2021-10-26 | yes | yes |
| 650-733 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 650-735 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 650-738 | AT&T PACIFIC BELL | – | no | yes |
| 650-898 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | – | yes | yes |
| 650-939 | Onvoy ONVOY, LLC - CA | 2026-09-03 | yes | no |
| 650-977 | FRACTEL, LLC | 2019-03-20 | yes | yes |
| 650-984 | Onvoy ONVOY, LLC - 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 | 4 | 22.2% |
| T-MOBILE USA, INC. | T-Mobile | 4 | 22.2% |
| ONVOY, LLC - CA | Onvoy | 2 | 11.1% |
| METROPCS, INC. | T-Mobile | 1 | 5.6% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 1 | 5.6% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 5.6% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 5.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 5.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 5.6% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 1 | 5.6% |
| FRACTEL, LLC | – | 1 | 5.6% |
Frequently asked
Which prefixes belong to PACIFICA in area code 650?
18 blocks: 290, 355, 359, 420, 451, 501, 516, 557, 661, 663, 675, 733 and 6 more, all listed in the table above.
Which carriers have numbers in PACIFICA?
PACIFIC BELL (4 blocks), T-MOBILE USA, INC. (4 blocks), ONVOY, LLC - CA (2 blocks), METROPCS, INC. (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is PACIFICA 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.