GLENBURNIE — MD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON MARYLAND, INC. | 9212 | 24 |
| OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | 9 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | 5 |
| PAETEC ITEL, LLC | 829J | 5 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | 3 |