Phone numbers in Fair Oaks, California
Fair Oaks has 50 phone prefixes in area codes 279, 916.
Biggest holders: AT&T (local phone), AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 30%
- Local phone company 26%
- Internet / business phone carrier 40%
- Paging service 2%
- Phone company 2%
Every prefix in Fair Oaks
Search the first six digits of a number in this list. If it's here, the number started in Fair Oaks with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 279-201 | Onvoy | Internet / business phone carrier | 2018 |
| 279-202 | Level 3 (Lumen) | Internet / business phone carrier | 2019 |
| 279-214 | Bandwidth | Internet / business phone carrier | 2021 |
| 279-252 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 279-291 | AT&T Mobility | Mobile carrier | 2025 |
| 279-782 | TON80 Communications | Internet / business phone carrier | 2022 |
| 279-790 | Onvoy | Internet / business phone carrier | 2022 |
| 916-200 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 916-225 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 916-241 | IP Horizon | Internet / business phone carrier | – |
| 916-308 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 916-342 | AT&T Mobility | Mobile carrier | – |
| 916-347 | Peerless Network Of California | Internet / business phone carrier | 2013 |
| 916-390 | AT&T Mobility | Mobile carrier | 2001 |
| 916-436 | Tpx Communications | Internet / business phone carrier | – |
| 916-459 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 916-526 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 916-534 | Teleport Communications America | Internet / business phone carrier | – |
| 916-535 | AT&T (local phone) | Local phone company | – |
| 916-536 | AT&T (local phone) | Local phone company | – |
| 916-537 | AT&T (local phone) | Local phone company | – |
| 916-545 | Verizon Wireless | Mobile carrier | 2015 |
| 916-546 | MetroPCS (T-Mobile) | Mobile carrier | 2009 |
| 916-579 | T-Mobile (including Sprint) | Mobile carrier | – |
| 916-633 | Verizon Wireless | Mobile carrier | – |
| 916-671 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 916-765 | AT&T Mobility | Mobile carrier | – |
| 916-768 | AT&T Mobility | Mobile carrier | – |
| 916-827 | Bandwidth | Internet / business phone carrier | 2014 |
| 916-844 | Allstream | Internet / business phone carrier | – |
| 916-847 | AT&T Mobility | Mobile carrier | – |
| 916-860 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 916-863 | AT&T (local phone) | Local phone company | – |
| 916-864 | AT&T (local phone) | Local phone company | – |
| 916-866 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 916-867 | AT&T (local phone) | Local phone company | – |
| 916-880 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 916-903 | Tpx Communications | Internet / business phone carrier | – |
| 916-904 | AT&T (local phone) | Local phone company | – |
| 916-907 | Onvoy | Internet / business phone carrier | 2021 |
| 916-908 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 916-948 | Spok | Paging service | – |
| 916-961 | AT&T (local phone) | Local phone company | – |
| 916-962 | AT&T (local phone) | Local phone company | – |
| 916-963 | Utility Telecom Group | Phone company | 2016 |
| 916-965 | AT&T (local phone) | Local phone company | – |
| 916-966 | AT&T (local phone) | Local phone company | – |
| 916-967 | AT&T (local phone) | Local phone company | – |
| 916-968 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 916-969 | Consolidated Communications Of California | Local phone company | – |
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.