Phone numbers in Jefferson, Texas
Jefferson has 5 phone prefixes in area codes 430, 903.
Biggest holders: AT&T (local phone), Etex Telecom, Charter / Spectrum. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 40%
- Internet / business phone carrier 20%
- Phone company 20%
Every prefix in Jefferson
Search the first six digits of a number in this list. If it's here, the number started in Jefferson with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 430-312 | Etex Telecom | Phone company | 2016 |
| 430-365 | Charter / Spectrum | Internet / business phone carrier | 2024 |
| 903-601 | Verizon Wireless | Mobile carrier | 2008 |
| 903-665 | AT&T (local phone) | Local phone company | – |
| 903-666 | 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.