WSNG238Z14 — MD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON MARYLAND, INC. | 9212 | 8 |
| BANDWIDTH.COM CLEC, LLC - MD | 071F | 2 |
| NUSO, LLC | 478J | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 1 |