Phone numbers in Farmington, California
Farmington has 3 phone prefixes in area code 209.
Biggest holders: Level 3 (Lumen), Frontier, Boost / Virgin Mobile. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 33%
- Internet / business phone carrier 33%
Every prefix in Farmington
Search the first six digits of a number in this list. If it's here, the number started in Farmington with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 209-757 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 209-886 | Frontier | Local phone company | – |
| 209-997 | Boost / Virgin Mobile | Mobile carrier | 2022 |
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.