Phone numbers in Howell, Utah
Howell has 3 phone prefixes in area code 435.
Biggest holders: Onvoy, Frontier, North County Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Howell
Search the first six digits of a number in this list. If it's here, the number started in Howell with the carrier shown. If it isn't, check the Utah page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 435-422 | Onvoy | Internet / business phone carrier | 2018 |
| 435-471 | Frontier | Local phone company | – |
| 435-473 | North County Communications | 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.