FALLSTON — MD
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | 9 |
| METROPCS, INC. | 5562 | 2 |
| PAETEC ITEL, LLC | 829J | 2 |
| ONVOY SPECTRUM, LLC | 624H | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | 1 |