Phone numbers in Sonoma, California
Sonoma has 18 phone prefixes in area codes 369, 707.
Biggest holders: AT&T (local phone), Onvoy, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 17%
- Local phone company 28%
- Internet / business phone carrier 39%
- Phone company 17%
Every prefix in Sonoma
Search the first six digits of a number in this list. If it's here, the number started in Sonoma with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 369-220 | Shelcomm | Phone company | 2024 |
| 369-777 | Wide Voice | Phone company | 2023 |
| 707-210 | Onvoy | Internet / business phone carrier | 2016 |
| 707-231 | Verizon Wireless | Mobile carrier | 2020 |
| 707-309 | Integrated Path Communications | Phone company | – |
| 707-343 | Onvoy | Internet / business phone carrier | – |
| 707-509 | IP Horizon | Internet / business phone carrier | – |
| 707-721 | Tpx Communications | Internet / business phone carrier | – |
| 707-732 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 707-931 | Teleport Communications America | Internet / business phone carrier | – |
| 707-933 | AT&T (local phone) | Local phone company | – |
| 707-934 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 707-935 | AT&T (local phone) | Local phone company | – |
| 707-938 | AT&T (local phone) | Local phone company | – |
| 707-939 | AT&T (local phone) | Local phone company | – |
| 707-940 | Onvoy | Internet / business phone carrier | – |
| 707-991 | Verizon Wireless | Mobile carrier | 2022 |
| 707-996 | AT&T (local phone) | 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.