SNJS SOUTH prefixes in area code 408
NANPA records 84 assigned NXX blocks to rate center SNJS SOUTH in area code 408, 10.7% 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. 18 holders hold those blocks, the largest being PACIFIC BELL (41), LEVEL 3 COMMUNICATIONS, LLC - CA (6), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6). The earliest assignment on record here is 2001-03-01 and the most recent 2026-05-21. 54 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.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 408-223 | AT&T PACIFIC BELL | – | yes | yes |
| 408-224 | AT&T PACIFIC BELL | – | no | yes |
| 408-225 | AT&T PACIFIC BELL | – | no | yes |
| 408-226 | AT&T PACIFIC BELL | – | no | yes |
| 408-227 | AT&T PACIFIC BELL | – | no | yes |
| 408-229 | AT&T PACIFIC BELL | – | yes | yes |
| 408-238 | AT&T PACIFIC BELL | – | no | yes |
| 408-239 | AT&T PACIFIC BELL | – | yes | yes |
| 408-256 | AT&T PACIFIC BELL | – | yes | yes |
| 408-264 | AT&T PACIFIC BELL | – | no | yes |
| 408-265 | AT&T PACIFIC BELL | – | no | yes |
| 408-266 | AT&T PACIFIC BELL | – | no | yes |
| 408-267 | AT&T PACIFIC BELL | – | no | yes |
| 408-268 | AT&T PACIFIC BELL | – | no | yes |
| 408-269 | AT&T PACIFIC BELL | – | no | yes |
| 408-270 | AT&T PACIFIC BELL | – | no | yes |
| 408-274 | AT&T PACIFIC BELL | – | no | yes |
| 408-281 | AT&T PACIFIC BELL | – | no | yes |
| 408-284 | AT&T PACIFIC BELL | – | yes | yes |
| 408-300 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2008-08-11 | yes | yes |
| 408-323 | AT&T PACIFIC BELL | – | yes | yes |
| 408-333 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-360 | AT&T PACIFIC BELL | – | yes | yes |
| 408-361 | AT&T PACIFIC BELL | – | yes | yes |
| 408-362 | AT&T PACIFIC BELL | – | yes | yes |
| 408-363 | AT&T PACIFIC BELL | – | no | yes |
| 408-365 | AT&T PACIFIC BELL | – | yes | yes |
| 408-389 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2011-05-06 | yes | yes |
| 408-403 | Onvoy ONVOY, LLC - CA | 2023-09-19 | yes | yes |
| 408-414 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-425 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-440 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2006-12-11 | yes | yes |
| 408-445 | AT&T PACIFIC BELL | – | no | yes |
| 408-448 | AT&T PACIFIC BELL | – | no | yes |
| 408-463 | AT&T PACIFIC BELL | – | yes | yes |
| 408-476 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-12-26 | yes | yes |
| 408-478 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2011-05-26 | yes | yes |
| 408-513 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 408-528 | AT&T PACIFIC BELL | – | yes | yes |
| 408-531 | AT&T PACIFIC BELL | – | yes | yes |
| 408-532 | AT&T PACIFIC BELL | – | yes | yes |
| 408-574 | AT&T PACIFIC BELL | – | no | yes |
| 408-578 | AT&T PACIFIC BELL | – | no | yes |
| 408-580 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 408-599 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2009-09-11 | yes | yes |
| 408-600 | T-Mobile T-MOBILE USA, INC. | 2007-08-16 | yes | yes |
| 408-613 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2007-09-15 | yes | yes |
| 408-620 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 2011-09-13 | yes | yes |
| 408-622 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 408-623 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 408-624 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-629 | AT&T PACIFIC BELL | – | no | yes |
| 408-630 | AT&T PACIFIC BELL | 2011-10-21 | yes | yes |
| 408-633 | NORTH COUNTY COMMUNICATION CORPORATION - CA | – | no | yes |
| 408-644 | T-Mobile T-MOBILE USA, INC. | 2001-11-28 | no | yes |
| 408-661 | T-Mobile METROPCS, INC. | 2001-09-21 | no | yes |
| 408-669 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2014-11-10 | yes | yes |
| 408-677 | T-Mobile T-MOBILE USA, INC. | 2006-02-22 | yes | yes |
| 408-693 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-08-13 | yes | yes |
| 408-694 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 408-705 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 408-717 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-723 | AT&T PACIFIC BELL | – | yes | yes |
| 408-724 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2010-06-09 | yes | yes |
| 408-728 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2005-08-03 | yes | yes |
| 408-754 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2001-03-01 | yes | yes |
| 408-759 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2008-07-07 | yes | yes |
| 408-766 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-784 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2011-09-19 | yes | yes |
| 408-800 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 408-809 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2013-03-08 | yes | yes |
| 408-826 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 408-833 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 408-841 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2006-02-23 | yes | yes |
| 408-880 | 33 WIRELESS INC. | – | no | yes |
| 408-903 | IP HORIZON LLC | – | yes | yes |
| 408-912 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 408-927 | AT&T PACIFIC BELL | – | yes | yes |
| 408-939 | Onvoy ONVOY, LLC - CA | 2026-05-21 | yes | yes |
| 408-960 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 408-972 | AT&T PACIFIC BELL | – | no | yes |
| 408-978 | AT&T PACIFIC BELL | – | no | yes |
| 408-979 | AT&T PACIFIC BELL | – | no | yes |
| 408-997 | 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 | 41 | 48.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 6 | 7.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 6 | 7.1% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 5 | 6% |
| ONVOY, LLC - CA | Onvoy | 4 | 4.8% |
| T-MOBILE USA, INC. | T-Mobile | 4 | 4.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 3 | 3.6% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 2 | 2.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 2 | 2.4% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 2 | 2.4% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 2 | 2.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 1.2% |
| NORTH COUNTY COMMUNICATION CORPORATION - CA | – | 1 | 1.2% |
| METROPCS, INC. | T-Mobile | 1 | 1.2% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 1.2% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 1.2% |
| 33 WIRELESS INC. | – | 1 | 1.2% |
| IP HORIZON LLC | – | 1 | 1.2% |
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 SOUTH in area code 408?
84 blocks: 223, 224, 225, 226, 227, 229, 238, 239, 256, 264, 265, 266 and 72 more, all listed in the table above.
Which carriers have numbers in SNJS SOUTH?
PACIFIC BELL (41 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (6 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6 blocks), NEW CINGULAR WIRELESS PCS, LLC (5 blocks), ONVOY, LLC - CA (4 blocks), T-MOBILE USA, INC. (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SNJS SOUTH 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.