| Business | Phone |
| High Tech System 9006 Breezewood Ter, Greenbelt 20770 | (301) 388-2388 |
| Ics 9111 Edmonston Rd, Greenbelt 20770 | (301) 614-3989 |
| On Site Computer Repair Greenbelt 20770 | (301) 552-8300 |
| Compu Sys Analysts-Csa 6006 Greenbelt Rd # 217, Greenbelt 20770 | (301) 474-6990 |
| Diebold Information & Sec Syts Bldg 25 Nasa Gsfc W Rm # S006, Greenbelt 20770 | (301) 286-3869 |