| Business | Phone |
| Communications Unlimited 101 S Whiting St, Alexandria 22304 | (703) 370-3200 |
| Psm One & Assoc 5340 Holmes Run Pkwy, Alexandria 22304 | (703) 751-1545 |
| Mobile Universe Corp 5500 Cherokee Ave, Alexandria 22312 | (703) 642-6212 |
| Intercall Telecommunications 4604 Pinecrest Office Park Dr, Alexandria 22312 | (703) 813-1780 |