Phone numbers in Campbell, California
Campbell has 71 phone prefixes in area codes 408, 669.
Biggest holders: AT&T (local phone), T-Mobile (including Sprint), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 31%
- Local phone company 25%
- Internet / business phone carrier 44%
Every prefix in Campbell
Search the first six digits of a number in this list. If it's here, the number started in Campbell with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 408-340 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 408-341 | AT&T (local phone) | Local phone company | – |
| 408-364 | AT&T (local phone) | Local phone company | – |
| 408-369 | AT&T (local phone) | Local phone company | – |
| 408-370 | AT&T (local phone) | Local phone company | – |
| 408-371 | AT&T (local phone) | Local phone company | – |
| 408-374 | AT&T (local phone) | Local phone company | – |
| 408-375 | T-Mobile (including Sprint) | Mobile carrier | – |
| 408-376 | AT&T (local phone) | Local phone company | – |
| 408-377 | AT&T (local phone) | Local phone company | – |
| 408-378 | AT&T (local phone) | Local phone company | – |
| 408-379 | AT&T (local phone) | Local phone company | – |
| 408-385 | Tpx Communications | Internet / business phone carrier | – |
| 408-409 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 408-410 | AT&T Mobility | Mobile carrier | 2001 |
| 408-412 | Bandwidth | Internet / business phone carrier | 2010 |
| 408-426 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 408-429 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 408-460 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 408-466 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 408-508 | AT&T Mobility | Mobile carrier | 2012 |
| 408-540 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 408-558 | AT&T (local phone) | Local phone company | – |
| 408-559 | AT&T (local phone) | Local phone company | – |
| 408-583 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 408-603 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 408-608 | Onvoy | Internet / business phone carrier | – |
| 408-614 | MCImetro (Verizon Business) | Internet / business phone carrier | 2012 |
| 408-626 | AT&T (local phone) | Local phone company | – |
| 408-628 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 408-637 | Tpx Communications | Internet / business phone carrier | 2010 |
| 408-679 | AT&T Mobility | Mobile carrier | 2002 |
| 408-680 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 408-688 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 408-761 | Verizon Wireless | Mobile carrier | – |
| 408-796 | AT&T (local phone) | Local phone company | – |
| 408-819 | Peerless Network Of California | Internet / business phone carrier | 2013 |
| 408-866 | AT&T (local phone) | Local phone company | – |
| 408-871 | AT&T (local phone) | Local phone company | – |
| 408-874 | AT&T (local phone) | Local phone company | – |
| 408-879 | AT&T (local phone) | Local phone company | – |
| 408-915 | MCImetro (Verizon Business) | Internet / business phone carrier | 2010 |
| 408-963 | Teleport Communications America | Internet / business phone carrier | – |
| 669-203 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 669-222 | Onvoy | Internet / business phone carrier | – |
| 669-237 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 669-251 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 669-254 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 669-262 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 669-268 | Peerless Network Of California | Internet / business phone carrier | 2016 |
| 669-273 | AT&T Mobility | Mobile carrier | 2015 |
| 669-278 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 669-279 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 669-282 | MCImetro (Verizon Business) | Internet / business phone carrier | 2016 |
| 669-289 | Bandwidth | Internet / business phone carrier | 2019 |
| 669-294 | Level 3 (Lumen) | Internet / business phone carrier | 2015 |
| 669-300 | Onvoy | Internet / business phone carrier | – |
| 669-302 | Verizon Wireless | Mobile carrier | 2020 |
| 669-313 | Teleport Communications America | Internet / business phone carrier | 2018 |
| 669-316 | Tpx Communications | Internet / business phone carrier | 2022 |
| 669-322 | Onvoy | Internet / business phone carrier | 2022 |
| 669-324 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 669-336 | Fractel | Internet / business phone carrier | 2020 |
| 669-338 | Onvoy | Internet / business phone carrier | 2021 |
| 669-359 | AT&T Mobility | Mobile carrier | 2024 |
| 669-609 | Onvoy | Internet / business phone carrier | 2020 |
| 669-667 | Fractel | Internet / business phone carrier | 2022 |
| 669-677 | Fractel | Internet / business phone carrier | 2021 |
| 669-869 | Onvoy | Internet / business phone carrier | 2024 |
| 669-871 | Teleport Communications America | Internet / business phone carrier | 2025 |
| 669-877 | Fractel | Internet / business phone carrier | 2021 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.