HALFMOONBY prefixes in area code 650
NANPA records 21 assigned NXX blocks to rate center HALFMOONBY in area code 650, 2.9% 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 T-MOBILE USA, INC. (7), PACIFIC BELL (3), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2). The earliest assignment on record here is 2002-09-19 and the most recent 2026-07-09. 19 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 |
|---|---|---|---|---|
| 650-276 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 650-284 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 650-309 | T-Mobile T-MOBILE USA, INC. | 2017-05-22 | yes | yes |
| 650-338 | T-Mobile T-MOBILE USA, INC. | 2014-11-03 | yes | yes |
| 650-402 | T-Mobile T-MOBILE USA, INC. | 2018-01-18 | yes | yes |
| 650-440 | T-Mobile T-MOBILE USA, INC. | 2002-09-19 | yes | yes |
| 650-459 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2019-02-06 | yes | yes |
| 650-476 | T-Mobile T-MOBILE USA, INC. | 2016-09-21 | yes | yes |
| 650-479 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 650-560 | AT&T PACIFIC BELL | – | yes | yes |
| 650-660 | T-Mobile T-MOBILE USA, INC. | 2015-03-13 | yes | yes |
| 650-712 | AT&T PACIFIC BELL | – | no | yes |
| 650-713 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 650-720 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 650-726 | AT&T PACIFIC BELL | – | no | yes |
| 650-729 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 650-750 | Onvoy ONVOY, LLC - CA | 2016-02-11 | yes | yes |
| 650-791 | Onvoy ONVOY, LLC - CA | 2026-07-09 | yes | no |
| 650-889 | IP HORIZON LLC | – | yes | yes |
| 650-912 | COMMIO, LLC | 2022-10-21 | yes | yes |
| 650-955 | FRACTEL, LLC | 2020-01-13 | 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 |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 7 | 33.3% |
| PACIFIC BELL | AT&T | 3 | 14.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 2 | 9.5% |
| ONVOY, LLC - CA | Onvoy | 2 | 9.5% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 4.8% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 1 | 4.8% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 4.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 4.8% |
| IP HORIZON LLC | – | 1 | 4.8% |
| COMMIO, LLC | – | 1 | 4.8% |
| FRACTEL, LLC | – | 1 | 4.8% |
Frequently asked
Which prefixes belong to HALFMOONBY in area code 650?
21 blocks: 276, 284, 309, 338, 402, 440, 459, 476, 479, 560, 660, 712 and 9 more, all listed in the table above.
Which carriers have numbers in HALFMOONBY?
T-MOBILE USA, INC. (7 blocks), PACIFIC BELL (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), ONVOY, LLC - CA (2 blocks), LEVEL 3 TELECOM OF CALIFORNIA, LP - 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 HALFMOONBY 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.