Phone numbers in Alta, Utah
Alta has 10 phone prefixes in area codes 385, 801.
Biggest holders: Verizon Wireless, Bandwidth, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 30%
- Local phone company 10%
- Internet / business phone carrier 60%
Every prefix in Alta
Search the first six digits of a number in this list. If it's here, the number started in Alta with the carrier shown. If it isn't, check the Utah page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 385-263 | Onvoy | Internet / business phone carrier | 2016 |
| 385-421 | Verizon Wireless | Mobile carrier | 2017 |
| 385-446 | Bandwidth | Internet / business phone carrier | 2021 |
| 385-449 | Bandwidth | Internet / business phone carrier | 2014 |
| 385-481 | Verizon Wireless | Mobile carrier | 2022 |
| 385-516 | Verizon Wireless | Mobile carrier | 2023 |
| 385-766 | Fractel | Internet / business phone carrier | 2021 |
| 801-206 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 801-742 | CenturyLink / Lumen | Local phone company | – |
| 801-893 | Bandwidth | Internet / business phone carrier | 2010 |
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.