1. Pingtone Communications
13921 Park Center Rd, Herndon, VA 20171
Coordinate: 38.93669,-77.42845
Phone: (703) 673-5200
2. Tata Communications Us Inc
2355 Dulles Corner Blvd Ste 700, Herndon, VA 20171
Coordinate: 38.95875,-77.42341
Phone: (703) 793-3395