CORTLAND — OH
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | 9 |
| BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | 3 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 3 |
| T-MOBILE USA, INC. | 6529 | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | 1 |