Phone numbers in Walnut Grove, California
Walnut Grove has 7 phone prefixes in area codes 279, 916.
Biggest holders: Fractel, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 29%
- Internet / business phone carrier 29%
Every prefix in Walnut Grove
Search the first six digits of a number in this list. If it's here, the number started in Walnut Grove with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 279-322 | Fractel | Internet / business phone carrier | 2021 |
| 279-799 | Fractel | Internet / business phone carrier | 2020 |
| 916-270 | T-Mobile (including Sprint) | Mobile carrier | – |
| 916-398 | AT&T Mobility | Mobile carrier | – |
| 916-477 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 916-527 | CenturyLink / Lumen | Local phone company | – |
| 916-776 | Frontier | 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.