DULLESMTRO — VA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | 2 |
| ONVOY, LLC - VA | 138E | 1 |
| TERRA NOVA TELECOM INC. | 145J | 1 |
| TON80 COMMUNICATIONS, LLC | 516J | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 1 |