Phone numbers in Mt. Vernon, Missouri
Mt. Vernon has 7 phone prefixes in area code 417.
Biggest holders: Brightspeed Of East Missouri, Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 57%
- Local phone company 43%
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 Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 417-205 | Verizon Wireless | Mobile carrier | 2002 |
| 417-316 | AT&T Mobility | Mobile carrier | 2001 |
| 417-366 | Verizon Wireless | Mobile carrier | 2002 |
| 417-461 | Brightspeed Of East Missouri | Local phone company | – |
| 417-466 | Brightspeed Of East Missouri | Local phone company | – |
| 417-471 | Brightspeed Of East Missouri | Local phone company | – |
| 417-606 | UScellular | Mobile carrier | 2005 |
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.