Phone numbers in Hempstead, Texas
Hempstead has 9 phone prefixes in area code 979.
Biggest holders: Level 3 (Lumen), AT&T (local phone), TON80 Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 11%
- Local phone company 22%
- Internet / business phone carrier 67%
Every prefix in Hempstead
Search the first six digits of a number in this list. If it's here, the number started in Hempstead with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 979-221 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 979-399 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 979-588 | TON80 Communications | Internet / business phone carrier | 2022 |
| 979-606 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 979-619 | IP Horizon | Internet / business phone carrier | 2025 |
| 979-645 | T-Mobile (including Sprint) | Mobile carrier | – |
| 979-710 | Onvoy | Internet / business phone carrier | – |
| 979-826 | AT&T (local phone) | Local phone company | – |
| 979-921 | AT&T (local phone) | 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.