| Business | Phone |
| Airtime Communications 12117 Darnestown Rd, Gaithersburg 20878 | (410) 266-8120 |
| Allied Communication Inc 12116 Darnestown Rd, Gaithersburg 20878 | (301) 670-0200 |
| Wagoner Communications Inc 15107 Whitetail Way, Gaithersburg 20878 | (301) 948-2891 |
| Synchtrack 76 Windbrooke Cir, Gaithersburg 20879 | (301) 869-6961 |
| Bennington Twnhse Comm Clubhse 29 Goodport Ln, Gaithersburg 20878 | (301) 977-9373 |
| Star Global Communications 18905 High Point Dr, Gaithersburg 20879 | (301) 515-9013 |
| Softel Communications 849 Quince Orchard Blvd, Gaithersburg 20878 | (240) 632-1000 |
| Classic Communication Corp 817 Linslade St, Gaithersburg 20878 | (301) 840-0144 |
| Communications In Print 7 Metropolitan Ct, Gaithersburg 20878 | (301) 527-9414 |
| Communications Unlimited 16760 Oakmont Ave, Gaithersburg 20877 | (301) 869-9221 |
| Data Net Communications Inc 18403 Woodfield Rd # C, Gaithersburg 20879 | (301) 330-4700 |
| Gra Communications 947 Clopper Rd, Gaithersburg 20878 | (240) 246-0004 |
| Lichtman Communications 7411 Lindbergh Dr, Gaithersburg 20879 | (240) 403-3000 |
| Lichtman Communications Inc 7881 Beechcraft Ave # B1, Gaithersburg 20879 | (301) 990-7900 |