Phone numbers in Kingsburg, California
Kingsburg has 9 phone prefixes in area codes 357, 559.
Biggest holders: Level 3 (Lumen), Onvoy, Skyetel. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 11%
- Local phone company 11%
- Internet / business phone carrier 67%
- Paging service 11%
Every prefix in Kingsburg
Search the first six digits of a number in this list. If it's here, the number started in Kingsburg with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 357-222 | Onvoy | Internet / business phone carrier | 2026 |
| 559-238 | Skyetel | Internet / business phone carrier | – |
| 559-419 | IP Horizon | Internet / business phone carrier | – |
| 559-503 | American Messaging Services | Paging service | – |
| 559-617 | Bandwidth | Internet / business phone carrier | 2021 |
| 559-634 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 559-859 | AT&T Mobility | Mobile carrier | – |
| 559-869 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 559-897 | 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.