Phone numbers in Caldwell, Texas
Caldwell has 6 phone prefixes in area code 979.
Biggest holders: AT&T Mobility, Texas Communications, Level 3 (Lumen). 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 Caldwell
Search the first six digits of a number in this list. If it's here, the number started in Caldwell with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-200 | AT&T Mobility | Mobile carrier | 2003 |
| 979-293 | Texas Communications | Phone company | 2004 |
| 979-315 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 979-406 | AT&T Mobility | Mobile carrier | – |
| 979-567 | Frontier | Local phone company | – |
| 979-697 | Onvoy | Internet / business phone carrier | 2022 |
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.