Phone numbers in Hollister, California
Hollister has 23 phone prefixes in area codes 408, 831.
Biggest holders: AT&T (local phone), Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 26%
- Internet / business phone carrier 26%
- Phone company 4%
Every prefix in Hollister
Search the first six digits of a number in this list. If it's here, the number started in Hollister with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 408-804 | Verizon Wireless | Mobile carrier | – |
| 831-205 | Teleport Communications America | Internet / business phone carrier | 2009 |
| 831-207 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 831-245 | Verizon Wireless | Mobile carrier | – |
| 831-265 | AT&T Enterprises | Phone company | 2008 |
| 831-271 | Telnyx | Internet / business phone carrier | 2021 |
| 831-297 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 831-313 | Charter / Spectrum | Internet / business phone carrier | 2009 |
| 831-327 | AT&T Mobility | Mobile carrier | 2024 |
| 831-524 | AT&T Mobility | Mobile carrier | – |
| 831-537 | Verizon Wireless | Mobile carrier | – |
| 831-630 | AT&T (local phone) | Local phone company | – |
| 831-634 | AT&T (local phone) | Local phone company | – |
| 831-635 | AT&T (local phone) | Local phone company | – |
| 831-636 | AT&T (local phone) | Local phone company | – |
| 831-637 | AT&T (local phone) | Local phone company | – |
| 831-638 | AT&T (local phone) | Local phone company | – |
| 831-664 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 831-665 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 831-673 | AT&T Mobility | Mobile carrier | – |
| 831-801 | Verizon Wireless | Mobile carrier | – |
| 831-833 | Commio | Internet / business phone carrier | 2022 |
| 831-902 | MetroPCS (T-Mobile) | Mobile carrier | – |
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.