Phone numbers in High Hill, Texas
High Hill has 3 phone prefixes in area code 979.
Biggest holders: Texas Communications, AT&T Mobility, Colorado Valley Tel. Coop. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Phone company 67%
Every prefix in High Hill
Search the first six digits of a number in this list. If it's here, the number started in High Hill with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-284 | Texas Communications | Phone company | 2004 |
| 979-309 | AT&T Mobility | Mobile carrier | 2013 |
| 979-561 | Colorado Valley Tel. Coop | 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.