Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
SNJS WEST prefixes in area code 408
NANPA records 321 assigned NXX blocks to rate center SNJS WEST in area code 408, 40.8% of the 787 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. 21 holders hold those blocks, the largest being PACIFIC BELL (143), NEW CINGULAR WIRELESS PCS, LLC (38), SPOK, INC. (27). The earliest assignment on record here is 2001-01-24 and the most recent 2025-04-07. 129 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 669 – overlay codes cover the same geography, so a rate center is served by all of them.
321 assigned blocks – 40.8% of 408
21 holders of record
129 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 408-200 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | no | yes |
| 408-207 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 408-210 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 408-213 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 408-216 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 2001-05-11 | yes | yes |
| 408-217 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2007-11-28 | yes | yes |
| 408-218 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-219 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-231 | Spok SPOK, INC. | – | no | yes |
| 408-233 | Spok SPOK, INC. | – | no | yes |
| 408-234 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-235 | AT&T PACIFIC BELL | – | no | yes |
| 408-236 | AT&T PACIFIC BELL | – | no | yes |
| 408-237 | Spok SPOK, INC. | – | no | yes |
| 408-241 | AT&T PACIFIC BELL | – | no | yes |
| 408-243 | AT&T PACIFIC BELL | – | no | yes |
| 408-244 | AT&T PACIFIC BELL | – | no | yes |
| 408-246 | AT&T PACIFIC BELL | – | no | yes |
| 408-247 | AT&T PACIFIC BELL | – | no | yes |
| 408-248 | AT&T PACIFIC BELL | – | no | yes |
| 408-249 | AT&T PACIFIC BELL | – | no | yes |
| 408-250 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-06-25 | no | yes |
| 408-252 | AT&T PACIFIC BELL | – | no | yes |
| 408-253 | AT&T PACIFIC BELL | – | no | yes |
| 408-255 | AT&T PACIFIC BELL | – | no | yes |
| 408-257 | AT&T PACIFIC BELL | – | no | yes |
| 408-260 | AT&T PACIFIC BELL | – | yes | yes |
| 408-261 | AT&T PACIFIC BELL | – | no | yes |
| 408-271 | AT&T PACIFIC BELL | – | no | yes |
| 408-275 | AT&T PACIFIC BELL | – | yes | yes |
| 408-276 | AT&T PACIFIC BELL | – | no | yes |
| 408-277 | AT&T PACIFIC BELL | – | no | yes |
| 408-278 | AT&T PACIFIC BELL | – | no | yes |
| 408-279 | AT&T PACIFIC BELL | – | yes | yes |
| 408-280 | AT&T PACIFIC BELL | – | no | yes |
| 408-282 | AT&T PACIFIC BELL | – | no | yes |
| 408-283 | AT&T PACIFIC BELL | – | no | yes |
| 408-285 | AT&T PACIFIC BELL | – | no | yes |
| 408-286 | AT&T PACIFIC BELL | – | no | yes |
| 408-287 | AT&T PACIFIC BELL | – | no | yes |
| 408-288 | AT&T PACIFIC BELL | – | no | yes |
| 408-289 | AT&T PACIFIC BELL | – | yes | yes |
| 408-291 | AT&T PACIFIC BELL | – | no | yes |
| 408-292 | AT&T PACIFIC BELL | – | no | yes |
| 408-293 | AT&T PACIFIC BELL | – | no | yes |
| 408-294 | AT&T PACIFIC BELL | – | no | yes |
| 408-295 | AT&T PACIFIC BELL | – | no | yes |
| 408-296 | AT&T PACIFIC BELL | – | yes | yes |
| 408-297 | AT&T PACIFIC BELL | – | no | yes |
| 408-298 | AT&T PACIFIC BELL | – | no | yes |
| 408-299 | AT&T PACIFIC BELL | – | no | yes |
| 408-301 | Spok SPOK, INC. | – | no | yes |
| 408-302 | Onvoy ONVOY, LLC - CA | 2023-09-19 | yes | yes |
| 408-305 | Spok SPOK, INC. | – | no | yes |
| 408-307 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-308 | Spok SPOK, INC. | – | no | yes |
| 408-309 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-313 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-314 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-315 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-316 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-318 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 408-320 | AT&T AT&T ENTERPRISES, LLC | 2010-03-24 | yes | yes |
| 408-322 | Spok SPOK, INC. | – | no | yes |
| 408-326 | AT&T PACIFIC BELL | – | yes | yes |
| 408-327 | AT&T PACIFIC BELL | – | no | yes |
| 408-330 | AT&T PACIFIC BELL | – | no | yes |
| 408-332 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 408-334 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 408-339 | AT&T PACIFIC BELL | – | no | yes |
| 408-342 | AT&T PACIFIC BELL | – | yes | yes |
| 408-343 | AT&T PACIFIC BELL | – | yes | yes |
| 408-344 | 33 WIRELESS INC. | – | no | yes |
| 408-345 | AT&T PACIFIC BELL | – | yes | yes |
| 408-346 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 408-350 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 408-351 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 408-352 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 408-366 | AT&T PACIFIC BELL | – | yes | yes |
| 408-367 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-380 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 408-381 | Onvoy ONVOY, LLC - CA | 2021-09-16 | yes | yes |
| 408-386 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-08-22 | no | yes |
| 408-387 | AT&T PACIFIC BELL | – | yes | yes |
| 408-388 | Spok SPOK, INC. | – | no | yes |
| 408-390 | T-Mobile T-MOBILE USA, INC. | 2001-04-25 | yes | yes |
| 408-391 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-392 | AT&T PACIFIC BELL | – | no | yes |
| 408-396 | T-Mobile T-MOBILE USA, INC. | 2001-04-25 | yes | yes |
| 408-397 | Spok SPOK, INC. | – | no | yes |
| 408-398 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-401 | T-Mobile METROPCS, INC. | 2001-10-18 | yes | yes |
| 408-406 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-407 | Spok SPOK, INC. | – | no | yes |
| 408-408 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 2025-04-07 | yes | yes |
| 408-417 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2002-02-22 | yes | yes |
| 408-418 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2008-12-18 | yes | yes |
| 408-423 | AT&T PACIFIC BELL | – | no | yes |
| 408-436 | AT&T PACIFIC BELL | – | no | yes |
| 408-437 | AT&T PACIFIC BELL | – | no | yes |
| 408-439 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-441 | AT&T PACIFIC BELL | – | no | yes |
| 408-446 | AT&T PACIFIC BELL | – | no | yes |
| 408-447 | AT&T PACIFIC BELL | – | no | yes |
| 408-450 | AT&T PACIFIC BELL | – | no | yes |
| 408-451 | AT&T PACIFIC BELL | – | no | yes |
| 408-452 | AT&T PACIFIC BELL | – | no | yes |
| 408-453 | AT&T PACIFIC BELL | – | no | yes |
| 408-454 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 408-459 | Onvoy ONVOY, LLC - CA | 2009-09-03 | yes | yes |
| 408-467 | AT&T PACIFIC BELL | – | no | yes |
| 408-472 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-477 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2011-07-29 | yes | yes |
| 408-482 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-483 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-485 | Spok SPOK, INC. | – | no | yes |
| 408-486 | AT&T PACIFIC BELL | – | no | yes |
| 408-487 | AT&T PACIFIC BELL | – | no | yes |
| 408-488 | Spok SPOK, INC. | – | no | yes |
| 408-489 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-490 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 408-491 | AT&T PACIFIC BELL | – | no | yes |
| 408-492 | AT&T PACIFIC BELL | – | no | yes |
| 408-494 | AT&T PACIFIC BELL | – | no | yes |
| 408-495 | AT&T PACIFIC BELL | – | yes | yes |
| 408-496 | AT&T PACIFIC BELL | – | no | yes |
| 408-497 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-499 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-501 | AT&T PACIFIC BELL | – | yes | yes |
| 408-504 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-506 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-510 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2007-01-19 | yes | yes |
| 408-512 | T-Mobile METROPCS, INC. | – | yes | yes |
| 408-516 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-517 | AT&T PACIFIC BELL | – | yes | yes |
| 408-521 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-529 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-533 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-534 | AT&T PACIFIC BELL | – | yes | yes |
| 408-535 | AT&T PACIFIC BELL | – | no | yes |
| 408-536 | AT&T PACIFIC BELL | – | no | yes |
| 408-537 | AT&T PACIFIC BELL | – | yes | yes |
| 408-538 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 408-539 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 408-547 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-549 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-550 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-551 | AT&T PACIFIC BELL | – | yes | yes |
| 408-552 | Spok SPOK, INC. | – | no | yes |
| 408-553 | AT&T PACIFIC BELL | – | no | yes |
| 408-554 | AT&T PACIFIC BELL | – | no | yes |
| 408-556 | AT&T PACIFIC BELL | – | yes | yes |
| 408-557 | AT&T PACIFIC BELL | – | yes | yes |
| 408-561 | T-Mobile METROPCS, INC. | 2001-08-22 | no | yes |
| 408-562 | AT&T PACIFIC BELL | – | no | yes |
| 408-563 | AT&T PACIFIC BELL | – | no | yes |
| 408-564 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | – | yes | yes |
| 408-565 | AT&T PACIFIC BELL | – | yes | yes |
| 408-566 | AT&T PACIFIC BELL | – | no | yes |
| 408-567 | AT&T PACIFIC BELL | – | yes | yes |
| 408-568 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-569 | T-Mobile T-MOBILE USA, INC. | 2001-04-25 | yes | yes |
| 408-572 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 408-573 | AT&T PACIFIC BELL | – | no | yes |
| 408-575 | AT&T PACIFIC BELL | – | no | yes |
| 408-579 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 408-581 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2022-08-22 | yes | yes |
| 408-588 | AT&T PACIFIC BELL | – | yes | yes |
| 408-589 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 408-590 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 408-591 | T-Mobile METROPCS, INC. | – | yes | yes |
| 408-595 | T-Mobile METROPCS, INC. | – | yes | yes |
| 408-605 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-606 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 2012-04-17 | yes | yes |
| 408-610 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 408-615 | AT&T PACIFIC BELL | – | no | yes |
| 408-619 | Spok SPOK, INC. | – | no | yes |
| 408-625 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2001-01-24 | yes | yes |
| 408-631 | Spok SPOK, INC. | – | no | yes |
| 408-638 | T-Mobile METROPCS, INC. | 2011-11-17 | yes | yes |
| 408-639 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 408-640 | T-Mobile METROPCS, INC. | – | yes | yes |
| 408-641 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2010-02-22 | yes | yes |
| 408-642 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2007-09-19 | yes | yes |
| 408-645 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2010-10-21 | yes | yes |
| 408-646 | T-Mobile T-MOBILE USA, INC. | 2001-11-28 | no | yes |
| 408-648 | IP HORIZON LLC | – | yes | yes |
| 408-650 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-652 | AT&T PACIFIC BELL | – | yes | yes |
| 408-653 | AT&T PACIFIC BELL | – | no | yes |
| 408-654 | AT&T PACIFIC BELL | – | no | yes |
| 408-658 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2010-10-25 | yes | yes |
| 408-660 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 408-666 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-668 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-673 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2010-03-31 | yes | yes |
| 408-674 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-689 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-690 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 408-691 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-696 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 408-697 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 408-699 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 408-703 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2011-04-12 | yes | yes |
| 408-704 | AT&T PACIFIC BELL | 2001-03-08 | yes | yes |
| 408-709 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2013-01-09 | yes | yes |
| 408-725 | AT&T PACIFIC BELL | – | no | yes |
| 408-727 | AT&T PACIFIC BELL | – | no | yes |
| 408-748 | AT&T PACIFIC BELL | – | yes | yes |
| 408-753 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2010-08-03 | yes | yes |
| 408-755 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-758 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-760 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 408-764 | AT&T PACIFIC BELL | – | yes | yes |
| 408-765 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 408-768 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-771 | T-Mobile METROPCS, INC. | 2001-01-25 | yes | yes |
| 408-772 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-777 | AT&T PACIFIC BELL | – | yes | yes |
| 408-780 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2011-08-04 | yes | yes |
| 408-781 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-783 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 2011-07-08 | yes | yes |
| 408-785 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2010-07-19 | yes | yes |
| 408-787 | Spok SPOK, INC. | – | no | yes |
| 408-788 | Spok SPOK, INC. | – | no | yes |
| 408-790 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-792 | AT&T PACIFIC BELL | – | yes | yes |
| 408-793 | AT&T PACIFIC BELL | – | no | yes |
| 408-794 | AT&T PACIFIC BELL | – | yes | yes |
| 408-795 | AT&T PACIFIC BELL | – | no | yes |
| 408-798 | Spok SPOK, INC. | – | no | yes |
| 408-799 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-806 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-807 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-808 | AT&T PACIFIC BELL | – | no | yes |
| 408-813 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-814 | Spok SPOK, INC. | – | no | yes |
| 408-815 | Spok SPOK, INC. | – | no | yes |
| 408-816 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2013-08-13 | yes | yes |
| 408-817 | AT&T PACIFIC BELL | – | yes | yes |
| 408-820 | Spok SPOK, INC. | – | no | yes |
| 408-821 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-823 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-828 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-829 | T-Mobile T-MOBILE USA, INC. | 2001-04-25 | yes | yes |
| 408-831 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2013-05-21 | yes | yes |
| 408-832 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-838 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-839 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-844 | AT&T PACIFIC BELL | – | yes | yes |
| 408-845 | AT&T PACIFIC BELL | – | no | yes |
| 408-849 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-850 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | no | yes |
| 408-851 | AT&T PACIFIC BELL | 2004-03-17 | yes | yes |
| 408-855 | AT&T PACIFIC BELL | – | yes | yes |
| 408-857 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-858 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-859 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-860 | Spok SPOK, INC. | – | no | yes |
| 408-861 | AT&T PACIFIC BELL | – | yes | yes |
| 408-862 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | no | yes |
| 408-863 | AT&T PACIFIC BELL | – | yes | yes |
| 408-864 | AT&T PACIFIC BELL | – | no | yes |
| 408-865 | AT&T PACIFIC BELL | – | yes | yes |
| 408-869 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-870 | Spok SPOK, INC. | – | no | yes |
| 408-873 | AT&T PACIFIC BELL | – | no | yes |
| 408-878 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-881 | AT&T PACIFIC BELL | – | yes | yes |
| 408-882 | AT&T PACIFIC BELL | – | yes | yes |
| 408-885 | AT&T PACIFIC BELL | – | no | yes |
| 408-886 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2006-01-18 | yes | yes |
| 408-888 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-891 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-892 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 408-893 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-896 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-899 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2008-06-25 | yes | yes |
| 408-905 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2008-08-08 | yes | yes |
| 408-916 | AT&T AT&T - LOCAL | – | yes | yes |
| 408-918 | AT&T PACIFIC BELL | – | no | yes |
| 408-919 | AT&T PACIFIC BELL | – | yes | yes |
| 408-920 | AT&T PACIFIC BELL | – | no | yes |
| 408-921 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-924 | AT&T PACIFIC BELL | – | no | yes |
| 408-925 | AT&T PACIFIC BELL | – | no | yes |
| 408-930 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-931 | AT&T PACIFIC BELL | 2006-03-23 | yes | yes |
| 408-932 | Spok SPOK, INC. | – | no | yes |
| 408-938 | AT&T PACIFIC BELL | – | no | yes |
| 408-947 | AT&T PACIFIC BELL | – | no | yes |
| 408-948 | Spok SPOK, INC. | – | no | yes |
| 408-949 | Spok SPOK, INC. | – | no | yes |
| 408-951 | Spok SPOK, INC. | – | no | yes |
| 408-961 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | no | yes |
| 408-966 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 408-967 | AT&T PACIFIC BELL | – | no | yes |
| 408-969 | AT&T PACIFIC BELL | – | yes | yes |
| 408-970 | AT&T PACIFIC BELL | – | yes | yes |
| 408-971 | AT&T PACIFIC BELL | – | no | yes |
| 408-973 | AT&T PACIFIC BELL | – | yes | yes |
| 408-974 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | no | yes |
| 408-975 | AT&T PACIFIC BELL | – | yes | yes |
| 408-977 | AT&T PACIFIC BELL | – | no | yes |
| 408-980 | AT&T PACIFIC BELL | – | no | yes |
| 408-981 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-982 | AT&T PACIFIC BELL | – | yes | yes |
| 408-983 | AT&T PACIFIC BELL | – | no | yes |
| 408-984 | AT&T PACIFIC BELL | – | no | yes |
| 408-985 | AT&T PACIFIC BELL | – | yes | yes |
| 408-986 | AT&T PACIFIC BELL | – | no | yes |
| 408-987 | AT&T PACIFIC BELL | – | yes | yes |
| 408-988 | AT&T PACIFIC BELL | – | yes | yes |
| 408-989 | AT&T PACIFIC BELL | – | yes | yes |
| 408-993 | AT&T PACIFIC BELL | – | yes | yes |
| 408-994 | AT&T PACIFIC BELL | – | yes | yes |
| 408-995 | AT&T PACIFIC BELL | – | no | yes |
| 408-996 | AT&T PACIFIC BELL | – | no | yes |
| 408-998 | AT&T PACIFIC BELL | – | no | yes |
| 408-999 | AT&T PACIFIC BELL | – | 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 | 143 | 44.5% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 38 | 11.8% |
| SPOK, INC. | Spok | 27 | 8.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 26 | 8.1% |
| ONVOY, LLC - CA | Onvoy | 14 | 4.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 12 | 3.7% |
| T-MOBILE USA, INC. | T-Mobile | 9 | 2.8% |
| METROPCS, INC. | T-Mobile | 8 | 2.5% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 7 | 2.2% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 7 | 2.2% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 6 | 1.9% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 6 | 1.9% |
| UTILITY TELECOM GROUP, LLC - CA | – | 5 | 1.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 3 | 0.9% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 3 | 0.9% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 2 | 0.6% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 0.3% |
| 33 WIRELESS INC. | – | 1 | 0.3% |
| IP HORIZON LLC | – | 1 | 0.3% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 0.3% |
| AT&T - LOCAL | AT&T | 1 | 0.3% |
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 SNJS WEST in area code 408?
321 blocks: 200, 207, 210, 213, 216, 217, 218, 219, 221, 231, 233, 234 and 309 more, all listed in the table above.
Which carriers have numbers in SNJS WEST?
PACIFIC BELL (143 blocks), NEW CINGULAR WIRELESS PCS, LLC (38 blocks), SPOK, INC. (27 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (26 blocks), ONVOY, LLC - CA (14 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (12 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SNJS WEST 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.