| Business | Phone |
| Analex Corp 4443 Brookfield Cor Dr 205, Chantilly 20151 | (703) 378-8967 |
| Centurion Research Corp 3901 Centerview Dr, Chantilly 20151 | (703) 796-0100 |
| History Factory 14140 Parke Long Ct, Chantilly 20151 | (703) 631-0500 |
| Riverside Research Institute 15059 Conference Center Dr, Chantilly 20151 | (703) 378-2230 |