LEWISTOWN — MT
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | 2 |
| TERRA NOVA TELECOM INC. | 145J | 1 |
| HD CARRIER LLC | 321J | 1 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 1 |
| WIDE VOICE, LLC - MT | 743G | 1 |