Phone numbers in Gonzales, California
Gonzales has 7 phone prefixes in area code 831.
Biggest holders: Tpx Communications, Level 3 (Lumen), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 14%
- Internet / business phone carrier 43%
Every prefix in Gonzales
Search the first six digits of a number in this list. If it's here, the number started in Gonzales with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 831-290 | Tpx Communications | Internet / business phone carrier | 2009 |
| 831-305 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 831-339 | AT&T Mobility | Mobile carrier | 2025 |
| 831-580 | IP Horizon | Internet / business phone carrier | – |
| 831-675 | AT&T (local phone) | Local phone company | – |
| 831-744 | Verizon Wireless | Mobile carrier | – |
| 831-774 | 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.