| Business | Phone |
| Lockheed Martin Corp 6411 Ivy Ln, Greenbelt 20770 | (301) 474-4087 |
| Microtel Greenbelt 20770 | (301) 345-4005 |
| Orbit Logic Inc 7501 Greenway Center Dr # 706, Greenbelt 20770 | (301) 982-6232 |
| Orbital Sciences Corp 7500 Greenway Center Dr # 700, Greenbelt 20770 | (301) 220-5600 |
| Atlantic Aerospace 6404 Ivy Ln # 300, Greenbelt 20770 | (301) 982-5200 |
| Goodard Space Flight Ctr Greenbelt Rd, Greenbelt 20771 | (301) 286-8955 |