| Business | Phone |
| Vista Computer 211 Perry Pkwy, Gaithersburg 20877 | (301) 926-7726 |
| Trident Tek 8041 Cessna Ave # 200, Gaithersburg 20879 | (301) 330-9884 |
| Bay Networks Inc 22 Firstfield Rd, Gaithersburg 20878 | (301) 250-3592 |
| Stewart Lloyd Networking Svc 7805 Misty Ct, Gaithersburg 20877 | (301) 921-1996 |
| Potomac United Network Inc 547 Tschiffely Square Rd, Gaithersburg 20878 | (301) 590-8707 |
| Eastnet Communications Inc 20005 Manor View Ter, Gaithersburg 20882 | (301) 519-0900 |
| F 1 Technical Svc 19340 Frenchton Pl, Gaithersburg 20886 | (301) 977-5756 |
| Norco Technologies Inc 18310 Montgomery Vlg Ave #400, Gaithersburg 20879 | (301) 519-0557 |
| Microserve Consulting Inc 16620 Sioux Ln, Gaithersburg 20878 | (301) 670-9791 |
| Home Cybernetics Inc Gaithersburg 20877 | (301) 947-9049 |