| Business | Phone |
| American Phone System 5021 Seminary Rd 1221, Alexandria 22311 | (703) 820-0347 |
| Objective Communications Inc 5706 General Washington Drd, Alexandria 22312 | (703) 564-7777 |
| Usa Telecommunications Inc 6420 Grovedale Dr, Alexandria 22310 | (703) 922-6000 |
| Rmv Communications Alexandria 22310 | (703) 924-8860 |