| Business | Phone |
| Allegiance Telecom Inc 8619 Westwood Center Dr, Vienna 22182 | (703) 891-3000 |
| Atx Communications Inc 8614 Westwood Center Dr 600, Vienna 22182 | (703) 847-8000 |
| Conein Communications Inc 513 Nelson Dr Ne, Vienna 22180 | (703) 281-0223 |
| Global Internetworking Inc 8605 Westwood Center Dr, Vienna 22182 | (703) 442-5500 |
| Xyrous Communications Llc 2112 Gallows Rd, Vienna 22182 | (703) 448-8222 |
| Talkingnets 8619 Westwood Center Dr, Vienna 22182 | (571) 234-5000 |
| Teleforward Inc 8000 Towers Crescent Dr # 1210, Vienna 22182 | (571) 234-4630 |
| Telenet Communications Corp 8229 Boone Blvd, Vienna 22182 | (703) 827-0221 |
| Stickdog Information Svc Co 143a Church St Nw, Vienna 22180 | (703) 319-1500 |
| Kmc Telecom Holdings Inc 2702 Sutton Rd, Vienna 22181 | (703) 255-0110 |
| Mc Duffie-Business Phone 9892 Palace Green Way, Vienna 22181 | (703) 255-0990 |
| Mfs-Icc 1953 Gallows Rd, Vienna 22182 | (703) 790-5341 |
| New World Communications 165 Maple Ave E, Vienna 22180 | (703) 281-2552 |