| Business | Phone |
| Tumbleweed Communications Corp 9885 Palace Green Way, Vienna 22181 | (703) 242-3571 |
| Intermec Technologies Corp Vienna 22182 | (703) 759-4504 |
| Professional Data Svc 512 N Maple Ave, Vienna 22180 | (703) 281-5067 |
| Non Dir Ols Uunet Tech Inc 1603 N Brandon Ave, Vienna 22180 | (703) 404-4283 |