Phone numbers in Fairmont, West Virginia
Fairmont has 23 phone prefixes in area codes 304, 681.
Biggest holders: Frontier, T-Mobile (including Sprint), UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 48%
- Local phone company 26%
- Internet / business phone carrier 22%
- Phone company 4%
Every prefix in Fairmont
Search the first six digits of a number in this list. If it's here, the number started in Fairmont with the carrier shown. If it isn't, check the West Virginia page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 304-333 | Fibernet | Internet / business phone carrier | – |
| 304-363 | Frontier | Local phone company | – |
| 304-365 | T-Mobile (including Sprint) | Mobile carrier | – |
| 304-366 | Frontier | Local phone company | – |
| 304-367 | Frontier | Local phone company | – |
| 304-368 | Frontier | Local phone company | – |
| 304-502 | Stratuswave Comm LLC Wv | Phone company | – |
| 304-534 | Frontier | Local phone company | – |
| 304-612 | UScellular | Mobile carrier | – |
| 304-657 | T-Mobile (including Sprint) | Mobile carrier | – |
| 304-694 | UScellular | Mobile carrier | – |
| 304-816 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 681-214 | Bandwidth | Internet / business phone carrier | 2012 |
| 681-332 | Verizon Wireless | Mobile carrier | 2022 |
| 681-404 | AT&T Mobility | Mobile carrier | 2010 |
| 681-443 | Verizon Wireless | Mobile carrier | 2013 |
| 681-460 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 681-489 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 681-526 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 681-530 | Shentel Communications | Local phone company | 2024 |
| 681-753 | AT&T Mobility | Mobile carrier | 2009 |
| 681-758 | Charter / Spectrum | Internet / business phone carrier | 2013 |
| 681-839 | Onvoy | Internet / business phone carrier | 2018 |
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.