Phone numbers in Knox City, Texas
Knox City has 3 phone prefixes in area code 940.
Biggest holders: Windstream Comm Sw, Santa Rosa Telephone Cooperative. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 100%
Every prefix in Knox City
Search the first six digits of a number in this list. If it's here, the number started in Knox City with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 940-316 | Windstream Comm Sw | Local phone company | 2016 |
| 940-657 | Santa Rosa Telephone Cooperative | Local phone company | 2001 |
| 940-658 | Windstream Comm Sw | 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.