MASON — MI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | 3 |
| MICHIGAN BELL TEL CO | 9323 | 2 |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 1 |
| ACD TELECOM, INC. - MI | 3535 | 1 |
| FIRST COMMUNICATIONS, LLC | 460K | 1 |