ALLEGAN — MI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER NORTH, INC. - MI | 0695 | 2 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 2 |
| TON80 COMMUNICATIONS, LLC | 516J | 1 |
| ONVOY, LLCV - MI | 543C | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | 1 |