Phone numbers in Sonora, Texas
Sonora has 6 phone prefixes in area code 325.
Biggest holders: Onvoy, Verizon Wireless, Frontier. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 17%
- Internet / business phone carrier 33%
- Phone company 17%
Every prefix in Sonora
Search the first six digits of a number in this list. If it's here, the number started in Sonora with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 325-206 | Verizon Wireless | Mobile carrier | 2002 |
| 325-354 | Onvoy | Internet / business phone carrier | 2023 |
| 325-387 | Frontier | Local phone company | – |
| 325-413 | Onvoy | Internet / business phone carrier | 2017 |
| 325-530 | T-Mobile (including Sprint) | Mobile carrier | – |
| 325-719 | Texas Communications | Phone company | 2002 |
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.