Phone numbers in Santa Ynez, California
Santa Ynez has 11 phone prefixes in area codes 805, 820.
Biggest holders: Frontier, Onvoy, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 27%
- Local phone company 36%
- Internet / business phone carrier 36%
Every prefix in Santa Ynez
Search the first six digits of a number in this list. If it's here, the number started in Santa Ynez with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 805-245 | Verizon Wireless | Mobile carrier | – |
| 805-325 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 805-350 | AT&T Mobility | Mobile carrier | – |
| 805-686 | Frontier | Local phone company | – |
| 805-688 | Frontier | Local phone company | – |
| 805-691 | Frontier | Local phone company | – |
| 805-693 | Frontier | Local phone company | – |
| 805-694 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 805-697 | Comcast | Internet / business phone carrier | – |
| 805-894 | Onvoy | Internet / business phone carrier | 2024 |
| 820-823 | Onvoy | Internet / business phone 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.