| Business | Phone |
| Virtual Atlantic Inc 10908 Bells Ridge Dr, Rockville 20854 | (301) 983-1000 |
| Visual Networks Inc 2092 Gaither Rd, Rockville 20850 | (301) 296-2300 |
| Sourcenet Inc 51 Monroe St # 1101, Rockville 20850 | (301) 990-6677 |
| Genesiss Solutions Corp 2419 Mccormick Rd, Rockville 20850 | (301) 294-3131 |
| Gimo Networks Inc Rockville 20850 | (301) 738-9190 |
| Info Structures 5 Choke Cherry Rd # 350, Rockville 20850 | (301) 417-7171 |
| ECC IT Solutions, LLC One Research Court, Suite 150, Rockville 20850 | (301) 337-3100 |