MT VERNON — MO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BRIGHTSPEED OF EAST MISSOURI, LLC | 1151 | 3 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | 2 |
| UNITED STATES CELLULAR - MO | 6275 | 1 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 1 |