SNCA NHCS prefixes in area code 661
NANPA records 67 assigned NXX blocks to rate center SNCA NHCS in area code 661, 9.9% of the 674 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. 18 holders hold those blocks, the largest being PACIFIC BELL (22), NEW CINGULAR WIRELESS PCS, LLC (6), ONVOY, LLC - CA (6). The earliest assignment on record here is 2001-04-18 and the most recent 2026-06-01. 43 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 |
|---|---|---|---|---|
| 661-200 | AT&T PACIFIC BELL | 2007-11-28 | yes | yes |
| 661-207 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 661-210 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 661-219 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 661-222 | AT&T PACIFIC BELL | – | yes | yes |
| 661-244 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 661-253 | AT&T PACIFIC BELL | – | no | yes |
| 661-254 | AT&T PACIFIC BELL | – | no | yes |
| 661-255 | AT&T PACIFIC BELL | – | no | yes |
| 661-257 | AT&T PACIFIC BELL | – | no | yes |
| 661-259 | AT&T PACIFIC BELL | – | no | yes |
| 661-260 | AT&T PACIFIC BELL | – | no | yes |
| 661-284 | AT&T PACIFIC BELL | – | no | yes |
| 661-286 | AT&T PACIFIC BELL | – | yes | yes |
| 661-287 | AT&T PACIFIC BELL | – | no | yes |
| 661-288 | AT&T PACIFIC BELL | – | no | yes |
| 661-290 | AT&T PACIFIC BELL | – | no | yes |
| 661-291 | AT&T PACIFIC BELL | – | no | yes |
| 661-294 | AT&T PACIFIC BELL | – | no | yes |
| 661-295 | AT&T PACIFIC BELL | – | no | yes |
| 661-310 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 661-312 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 661-362 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 661-373 | T-Mobile T-MOBILE USA, INC. | 2001-12-14 | no | yes |
| 661-383 | AT&T PACIFIC BELL | 2015-02-17 | yes | yes |
| 661-388 | Charter TWC IP ENABLED SERVICES, LLC | 2010-08-16 | yes | yes |
| 661-414 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 661-417 | T-Mobile METROPCS NETWORKS, LLC | 2017-06-30 | yes | yes |
| 661-425 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2014-03-21 | yes | yes |
| 661-442 | SHELCOMM | 2004-08-12 | no | yes |
| 661-476 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-06-16 | yes | yes |
| 661-481 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2013-03-09 | yes | yes |
| 661-495 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 661-502 | T-Mobile METROPCS NETWORKS, LLC | 2020-05-27 | yes | yes |
| 661-505 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2001-05-01 | yes | yes |
| 661-510 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 661-554 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 661-568 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 661-593 | T-Mobile T-MOBILE USA, INC. | 2016-07-15 | yes | yes |
| 661-600 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 661-607 | AT&T PACIFIC BELL | – | yes | yes |
| 661-625 | T-Mobile T-MOBILE USA, INC. | 2021-12-08 | yes | yes |
| 661-627 | T-Mobile T-MOBILE USA, INC. | 2021-02-16 | yes | yes |
| 661-644 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 661-645 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 661-651 | Onvoy ONVOY, LLC - CA | 2022-11-23 | yes | yes |
| 661-652 | T-Mobile T-MOBILE USA, INC. | 2024-09-12 | yes | yes |
| 661-666 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 661-670 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 661-678 | AT&T AT&T - LOCAL | – | yes | yes |
| 661-702 | AT&T PACIFIC BELL | – | yes | yes |
| 661-705 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2002-08-09 | yes | yes |
| 661-713 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 661-714 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 661-753 | AT&T PACIFIC BELL | – | yes | yes |
| 661-755 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 661-775 | AT&T PACIFIC BELL | – | no | yes |
| 661-799 | AT&T PACIFIC BELL | – | no | yes |
| 661-803 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-18 | no | yes |
| 661-812 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2024-01-17 | yes | yes |
| 661-850 | Onvoy ONVOY, LLC - CA | 2026-06-01 | yes | no |
| 661-857 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 661-877 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 661-888 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 661-904 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 661-964 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 661-993 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | 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 | 32.8% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 6 | 9% |
| ONVOY, LLC - CA | Onvoy | 6 | 9% |
| METROPCS NETWORKS, LLC | T-Mobile | 6 | 9% |
| T-MOBILE USA, INC. | T-Mobile | 6 | 9% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 5 | 7.5% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 2 | 3% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 2 | 3% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 2 | 3% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 2 | 3% |
| UTILITY TELECOM GROUP, LLC - CA | – | 1 | 1.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 1.5% |
| PAETEC ITEL, LLC | Windstream | 1 | 1.5% |
| TWC IP ENABLED SERVICES, LLC | Charter | 1 | 1.5% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 1.5% |
| SHELCOMM | – | 1 | 1.5% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 1.5% |
| AT&T - LOCAL | AT&T | 1 | 1.5% |
Frequently asked
Which prefixes belong to SNCA NHCS in area code 661?
67 blocks: 200, 207, 210, 219, 222, 244, 253, 254, 255, 257, 259, 260 and 55 more, all listed in the table above.
Which carriers have numbers in SNCA NHCS?
PACIFIC BELL (22 blocks), NEW CINGULAR WIRELESS PCS, LLC (6 blocks), ONVOY, LLC - CA (6 blocks), METROPCS NETWORKS, LLC (6 blocks), T-MOBILE USA, INC. (6 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (5 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SNCA NHCS 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.