| Business | Phone |
| In Phonic Inc 9301 Peppercorn Pl, Upper Marlboro 20774 | (301) 883-0040 |
| Nextel 1100 Mercantile Ln # 100, Upper Marlboro 20774 | (301) 772-8940 |
| Aaa Wireless 10412 Campus Way S, Upper Marlboro 20774 | (301) 808-2077 |
| Cellular One 13150 Old Marlboro Pike, Upper Marlboro 20772 | (301) 574-1938 |
| Cellular One 9205 Marlboro Pike, Upper Marlboro 20772 | (301) 599-0598 |
| Cingular Wireless 860 Capital Centre Blvd, Upper Marlboro 20774 | (301) 324-1170 |
| E Wireless 8809 Great Gorge Way, Upper Marlboro 20772 | (301) 780-5885 |
| First Choice Communications 14707 Main St # A, Upper Marlboro 20772 | (301) 574-1800 |
| Wireless Zone 10418 Campus Way S, Upper Marlboro 20774 | (301) 324-1550 |