Phone numbers in Lone Star, Texas
Lone Star has 3 phone prefixes in area code 903.
Biggest holders: Csc Voice, Windstream Comm Sw. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 67%
Every prefix in Lone Star
Search the first six digits of a number in this list. If it's here, the number started in Lone Star with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 903-320 | Csc Voice | Internet / business phone carrier | – |
| 903-605 | Csc Voice | Internet / business phone carrier | 2014 |
| 903-656 | 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.