BALTIMORE — OH
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 3 |
| FRONTIER NORTH, INC. - OH | 0615 | 1 |
| ONVOY, LLC - OH | 464C | 1 |
| TWC IP ENABLED SERVICES, LLC | 793K | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 3 |
| FRONTIER NORTH, INC. - OH | 0615 | 1 |
| ONVOY, LLC - OH | 464C | 1 |
| TWC IP ENABLED SERVICES, LLC | 793K | 1 |