CASSVILLE — MO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | 2 |
| BRIGHTSPEED OF MISSOURI, LLC | 9787 | 2 |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | 1 |