Phone numbers in La Grange, Texas
La Grange has 11 phone prefixes in area code 979.
Biggest holders: Frontier, Onvoy, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 36%
- Local phone company 27%
- Internet / business phone carrier 18%
- Phone company 18%
Every prefix in La Grange
Search the first six digits of a number in this list. If it's here, the number started in La Grange with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-206 | Onvoy | Internet / business phone carrier | 2012 |
| 979-250 | T-Mobile (including Sprint) | Mobile carrier | 2003 |
| 979-261 | Vonage America | Internet / business phone carrier | 2018 |
| 979-333 | Evolve Cellular | Mobile carrier | 2015 |
| 979-338 | Verizon Wireless | Mobile carrier | 2008 |
| 979-468 | Ahoi | Phone company | 2026 |
| 979-577 | Texas Communications | Phone company | 2004 |
| 979-639 | Frontier | Local phone company | 2001 |
| 979-702 | AT&T Mobility | Mobile carrier | – |
| 979-966 | Frontier | Local phone company | – |
| 979-968 | Frontier | 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.