Phone numbers in Dinosaur, Colorado
Dinosaur has 4 phone prefixes in area code 970.
Biggest holders: CenturyLink / Lumen, Onvoy, Union Telephone. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 50%
- Internet / business phone carrier 25%
Every prefix in Dinosaur
Search the first six digits of a number in this list. If it's here, the number started in Dinosaur with the carrier shown. If it isn't, check the Colorado page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 970-374 | CenturyLink / Lumen | Local phone company | – |
| 970-548 | Onvoy | Internet / business phone carrier | 2007 |
| 970-574 | Union Telephone | Local phone company | – |
| 970-933 | AT&T Mobility | Mobile carrier | 2021 |
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.