HAGERSTOWN — MD
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON MARYLAND, INC. | 9212 | 15 |
| OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | 7 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | 6 |
| METROPCS, INC. | 5562 | 5 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 3 |