TOMPKINSVL — MD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PEERLESS NETWORK OF MARYLAND, LLC | 568G | 2 |
| CORE COMMUNICATIONS, INC.- MD | 2593 | 1 |
| ONVOY SPECTRUM, LLC | 624H | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | 1 |
| ONVOY, LLC - MD | 876D | 1 |