| Business | Phone |
| Aes Power Direct Inc 1650 Tysons Blvd, Mclean 22102 | (703) 734-5003 |
| Aspect Software Inc 1660 International Dr 710, Mclean 22102 | (571) 633-3300 |
| Xplorium Inc 8280 Greensboro Dr 130, Mclean 22102 | (703) 748-1800 |
| Us Lec 7901 Jones Branch Dr, Mclean 22102 | (703) 584-1000 |
| Mci 8200 Greensboro Dr, Mclean 22102 | (703) 270-5600 |
| Primus Telecommunications Inc 7901 Jones Branch Dr 900, Mclean 22102 | (703) 902-2800 |