| Business | Phone |
| Global Crossing Telecom Inc 12010 Sunset Hills Rd 300, Reston 20190 | (703) 464-3300 |
| Wave Lab 12007 Sunrise Valley Dr 350, Reston 20191 | (703) 860-3522 |
| X O Communications Inc 11111 Sunset Hills Rd, Reston 20190 | (703) 547-2000 |
| Washington Telephone 12355 Sunrise Valley Dr, Reston 20191 | (703) 620-5460 |
| Telecom Blues 11921 Freedom Dr, Reston 20190 | (703) 904-4317 |
| Stc Telecom Inc 11490 Commerce Park Dr, Reston 20191 | (703) 648-3470 |
| Onevoice Communications 1800 Alexander Bell Dr, Reston 20191 | (703) 860-7060 |
| Optimal Satcom Inc 1851 Alexander Bell Dr, Reston 20191 | (703) 860-9670 |