| Business | Phone |
| A T & T 11700 Sudley Manor Dr, Manassas 20109 | (703) 393-7809 |
| Atlantic & Pacific Telecom 8560 Virginia Meadows Dr, Manassas 20109 | (703) 330-8767 |
| Tele Communication Systems Inc 7333 Coppermine Dr, Manassas 20109 | (703) 334-2030 |
| Swift Technology Ctr 9615 Center St, Manassas 20110 | (703) 365-6000 |
| Spectrum Services Intl 8516 Custer Ct, Manassas 20112 | (703) 369-4997 |