| Business | Phone |
| Mspx Inc 7700 Leesburg Pike 229, Falls Church 22043 | (703) 525-1000 |
| Netstream Communications Llc 1930 Pimmit Dr, Falls Church 22043 | (703) 352-0050 |
| Cns Inc 5613 Leesburg Pike, Falls Church 22041 | (703) 379-6556 |
| Dhk Consulting Svc Po Box 3271, Falls Church 22043 | (703) 734-0857 |
| Dhk Consulting Svc Inc 2222 Mogehan Dr, Falls Church 22043 | (301) 593-0900 |
| Aci Solutions 131 E Broad St 209, Falls Church 22046 | (703) 531-1960 |
| Nortec Communications 7531 Leesburg Pike 101, Falls Church 22043 | (703) 448-0660 |
| Nt-Unix-Linux-Novell-Internet 5113 Leesburg Pike, Falls Church 22041 | (703) 721-4004 |