Phone numbers in Evanston, Wyoming
Evanston has 13 phone prefixes in area code 307.
Biggest holders: Level 3 (Lumen), Verizon Wireless, Union Telephone. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 15%
- Local phone company 31%
- Internet / business phone carrier 23%
- Phone company 31%
Every prefix in Evanston
Search the first six digits of a number in this list. If it's here, the number started in Evanston with the carrier shown. If it isn't, check the Wyoming page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 307-255 | Uintah Basin Electronic Telecommunications | Phone company | 2002 |
| 307-288 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 307-313 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 307-393 | Airus | Phone company | 2021 |
| 307-442 | Onvoy | Internet / business phone carrier | 2024 |
| 307-444 | All West/wyoming | Phone company | – |
| 307-497 | All West Communications | Phone company | – |
| 307-677 | Verizon Wireless | Mobile carrier | – |
| 307-679 | Verizon Wireless | Mobile carrier | – |
| 307-708 | Union Telephone | Local phone company | 2003 |
| 307-783 | CenturyLink / Lumen | Local phone company | – |
| 307-789 | CenturyLink / Lumen | Local phone company | – |
| 307-799 | Union Telephone | Local 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.