| Business | Phone |
| Aer Svc Inc 627 University Blvd E, Silver Spring 20901 | (301) 408-2300 |
| Verizon Communications 13100 Columbia Pike, Silver Spring 20904 | (301) 954-6260 |
| Telnet Wireless 8701 Georgia Ave, Silver Spring 20910 | (301) 587-9409 |
| Sagex Telecommunications 1010 Wayne Ave # 940, Silver Spring 20910 | (301) 588-4770 |
| Curtain Call Communications Co 15523 Langside St, Silver Spring 20905 | (301) 989-2255 |
| G 3 Call Cc Llc 11120 New Hampshire Ave # 502, Silver Spring 20904 | (301) 593-4828 |