Phone numbers in Duchesne, Utah
Duchesne has 5 phone prefixes in area code 435.
Biggest holders: AT&T Mobility, Strata Networks, Union Telephone. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 40%
- Local phone company 20%
- Phone company 40%
Every prefix in Duchesne
Search the first six digits of a number in this list. If it's here, the number started in Duchesne with the carrier shown. If it isn't, check the Utah page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 435-322 | AT&T Mobility | Mobile carrier | 2010 |
| 435-733 | AT&T Mobility | Mobile carrier | – |
| 435-738 | Strata Networks | Phone company | – |
| 435-768 | Union Telephone | Local phone company | 2004 |
| 435-822 | Uintah Basin Electronic Telecommunications | 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.