Phone numbers in Calvert, Texas
Calvert has 4 phone prefixes in area code 979.
Biggest holders: Texas Communications, AT&T (local phone), AT&T Enterprises. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 25%
- Phone company 50%
Every prefix in Calvert
Search the first six digits of a number in this list. If it's here, the number started in Calvert with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-287 | Texas Communications | Phone company | 2004 |
| 979-364 | AT&T (local phone) | Local phone company | – |
| 979-368 | AT&T Enterprises | Phone company | 2025 |
| 979-899 | Fractel | Internet / business phone carrier | 2020 |
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.