| Business | Phone |
| Bachman Associates Herndon 20170 | (703) 834-9022 |
| B G Edgington 1507 Hiddenbrook Dr, Herndon 20170 | (703) 435-7552 |
| Cisco Systems Inc 13615 Dulles Technology Dr, Herndon 20171 | (703) 397-5500 |
| Innovative Technologies 3409 Oakton Chase Ct, Herndon 20171 | (703) 716-4716 |
| Telcore Herndon 20170 | (540) 751-1885 |
| Telenex Corp Herndon 20170 | (703) 834-3081 |
| Rcg Inc 462 Herndon Pkwy 203, Herndon 20170 | (703) 834-1155 |
| Rgi Ltd Herndon 20170 | (703) 471-7528 |
| Rice Williams Assoc 209 Elden St 306, Herndon 20170 | (703) 467-9833 |