Phone numbers in Denison, Texas
Denison has 18 phone prefixes in area codes 430, 903.
Biggest holders: AT&T (local phone), Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 28%
- Local phone company 44%
- Internet / business phone carrier 22%
- Paging service 6%
Every prefix in Denison
Search the first six digits of a number in this list. If it's here, the number started in Denison with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 430-277 | Verizon Wireless | Mobile carrier | 2020 |
| 430-396 | Onvoy | Internet / business phone carrier | 2026 |
| 430-666 | Fractel | Internet / business phone carrier | 2019 |
| 430-964 | AT&T Mobility | Mobile carrier | 2024 |
| 903-271 | AT&T Mobility | Mobile carrier | – |
| 903-327 | AT&T (local phone) | Local phone company | – |
| 903-337 | AT&T (local phone) | Local phone company | 2001 |
| 903-361 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 903-415 | AT&T (local phone) | Local phone company | – |
| 903-416 | AT&T (local phone) | Local phone company | – |
| 903-462 | AT&T (local phone) | Local phone company | – |
| 903-463 | AT&T (local phone) | Local phone company | – |
| 903-464 | AT&T (local phone) | Local phone company | – |
| 903-465 | AT&T (local phone) | Local phone company | – |
| 903-548 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 903-620 | American Messaging Services | Paging service | – |
| 903-624 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 903-647 | Verizon Wireless | Mobile carrier | – |
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.