| Business | Phone |
| A C Communications Corp 11141 Georgia Ave, Silver Spring 20902 | (301) 942-3999 |
| Worldwide Communications 11427 Georgia Ave, Silver Spring 20902 | (301) 949-6800 |
| American Communication 223 University Blvd E, Silver Spring 20901 | (301) 587-2200 |
| Star Access 814 Thayer Ave # 301, Silver Spring 20910 | (301) 589-4756 |
| Capital Communications Inc 2141 Industrial Pkwy, Silver Spring 20904 | (301) 879-8282 |
| Cll Communications & Data 2401 Blueridge Ave, Silver Spring 20902 | (301) 598-9489 |
| Coastal Communications Group 10801 Lockwood Dr, Silver Spring 20901 | (301) 681-7612 |
| Communications Network 8757 Georgia Ave, Silver Spring 20910 | (301) 589-4262 |
| Rapport Communication 1447 Crestridge Dr, Silver Spring 20910 | (301) 585-4717 |
| Precision Communications 8601 Georgia Ave, Silver Spring 20910 | (301) 585-0322 |
| Edwin Dill 9001 New Hampshire Ave, Silver Spring 20903 | (301) 434-7968 |
| New World Communications 11935 Georgia Ave, Silver Spring 20902 | (301) 962-0101 |
| Flash Talk Communications 8070 Georgia Ave, Silver Spring 20910 | (301) 585-4481 |
| Glynn Communications 14502 Macbeth Dr, Silver Spring 20906 | (301) 598-0700 |
| Iva Communications 8320 12th Ave, Silver Spring 20903 | (301) 431-6277 |