Phone numbers in Mt. Vernon, Alabama
Mt. Vernon has 7 phone prefixes in area code 251.
Biggest holders: AT&T Enterprises, Windstream (PAETEC), Mcc Telephony Of The South. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 14%
- Internet / business phone carrier 71%
- Phone company 14%
Every prefix in Mt. Vernon
Search the first six digits of a number in this list. If it's here, the number started in Mt. Vernon with the carrier shown. If it isn't, check the Alabama page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 251-265 | AT&T Enterprises | Phone company | 2011 |
| 251-268 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 251-299 | Mcc Telephony Of The South | Internet / business phone carrier | 2010 |
| 251-523 | Onvoy | Internet / business phone carrier | 2021 |
| 251-531 | Hd Carrier | Internet / business phone carrier | 2025 |
| 251-758 | Fractel | Internet / business phone carrier | 2020 |
| 251-829 | AT&T (local phone) | 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.