HAVREGRACE — MD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON MARYLAND, INC. | 9212 | 3 |
| PAETEC ITEL, LLC | 829J | 2 |
| TON80 COMMUNICATIONS, LLC | 516J | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | 1 |
| ONVOY, LLC - MD | 876D | 1 |