Phone numbers in Hanford, California
Hanford has 32 phone prefixes in area codes 357, 559.
Biggest holders: AT&T (local phone), AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 41%
- Local phone company 25%
- Internet / business phone carrier 25%
- Paging service 3%
- Phone company 6%
Every prefix in Hanford
Search the first six digits of a number in this list. If it's here, the number started in Hanford with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 357-777 | Wide Voice | Phone company | 2026 |
| 559-212 | Tpx Communications | Internet / business phone carrier | – |
| 559-309 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 559-357 | Verizon Wireless | Mobile carrier | 2024 |
| 559-362 | AT&T Mobility | Mobile carrier | – |
| 559-380 | Onvoy | Internet / business phone carrier | – |
| 559-381 | Verizon Wireless | Mobile carrier | – |
| 559-410 | AT&T (local phone) | Local phone company | 2003 |
| 559-413 | AT&T Mobility | Mobile carrier | 2015 |
| 559-415 | IP Horizon | Internet / business phone carrier | – |
| 559-469 | T-Mobile (including Sprint) | Mobile carrier | – |
| 559-491 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 559-506 | American Messaging Services | Paging service | – |
| 559-530 | Bandwidth | Internet / business phone carrier | 2010 |
| 559-537 | Tpx Communications | Internet / business phone carrier | 2010 |
| 559-572 | AT&T Mobility | Mobile carrier | 2001 |
| 559-582 | AT&T (local phone) | Local phone company | – |
| 559-583 | AT&T (local phone) | Local phone company | – |
| 559-584 | AT&T (local phone) | Local phone company | – |
| 559-585 | AT&T (local phone) | Local phone company | – |
| 559-587 | AT&T (local phone) | Local phone company | – |
| 559-589 | AT&T (local phone) | Local phone company | – |
| 559-639 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 559-670 | Wide Voice | Phone company | 2011 |
| 559-707 | Verizon Wireless | Mobile carrier | – |
| 559-772 | Comcast | Internet / business phone carrier | – |
| 559-794 | Verizon Wireless | Mobile carrier | 2015 |
| 559-796 | AT&T Mobility | Mobile carrier | 2015 |
| 559-836 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 559-852 | AT&T (local phone) | Local phone company | 2011 |
| 559-858 | AT&T Mobility | Mobile carrier | 2024 |
| 559-929 | TON80 Communications | Internet / business phone 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.