Phone numbers in Windsor, California
Windsor has 11 phone prefixes in area codes 369, 707.
Biggest holders: Verizon Wireless, AT&T (local phone), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 45%
- Local phone company 27%
- Internet / business phone carrier 27%
Every prefix in Windsor
Search the first six digits of a number in this list. If it's here, the number started in Windsor with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 369-225 | Verizon Wireless | Mobile carrier | 2024 |
| 707-239 | Verizon Wireless | Mobile carrier | – |
| 707-608 | AT&T Mobility | Mobile carrier | 2017 |
| 707-620 | Teleport Communications America | Internet / business phone carrier | – |
| 707-657 | Onvoy | Internet / business phone carrier | – |
| 707-687 | Allstream | Internet / business phone carrier | 2001 |
| 707-836 | AT&T (local phone) | Local phone company | – |
| 707-837 | AT&T (local phone) | Local phone company | – |
| 707-838 | AT&T (local phone) | Local phone company | – |
| 707-892 | Verizon Wireless | Mobile carrier | 2013 |
| 707-970 | Boost / Virgin Mobile | Mobile carrier | 2023 |
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.