| Business Name | Phone | Address | zip code |
| Cellular One | (410)712-7870 | 10715 Little Patuxent Parkway | 21044 |
| Wireless Champs | (410)715-0401 | 10300 Little Patuxent Pkwy | 21044 |
| Cingular Wireless | (410)715-6519 | 10715 Little Patuxent Pkwy | 21044 |
| T-Mobile - the Mall in Columbia | (410)730-0030 | 10300 Little Patuxent Parkway | 21044 |
| Wireless Factory | (410)730-8530 | 10300 Little Patuxent Pkwy | 21044 |
| Nextel Retail Stores | (410)772-9424 | 10300 Little Patuxent Parkway | 21044 |
| The Execucentre | (410)385-5200 | 10440 Little Patuxent Parkway | 21044 |
| B 2 B Solutions | (410)772-1633 | 10632 Little Patuxent Parkway | 21044 |
| Directory Management Group | (410)715-2076 | 5565 Sterrett Place | 21044 |
| Ad National | (410)715-6900 | 5565 Sterrett Place Suite 401 | 21044 |
| Simply Wireless Inc | (410)964-9400 | Columbia Mall | 21044 |
| Regional Telecommunications Inc | (410)995-1688 | 10103 Windstream Drive | 21044 |
| Cellular One | (410)712-7870 | 10715 Little Patuxent Parkway | 21044 |
| Wireless Champs | (410)715-0401 | 10300 Little Patuxent Pkwy | 21044 |
| Cingular Wireless | (410)715-6519 | 10715 Little Patuxent Pkwy | 21044 |
| T-Mobile - the Mall in Columbia | (410)730-0030 | 10300 Little Patuxent Parkway | 21044 |
| Wireless Factory | (410)730-8530 | 10300 Little Patuxent Pkwy | 21044 |
| Nextel Retail Stores | (410)772-9424 | 10300 Little Patuxent Parkway | 21044 |
| The Execucentre | (410)385-5200 | 10440 Little Patuxent Parkway | 21044 |
| B 2 B Solutions | (410)772-1633 | 10632 Little Patuxent Parkway | 21044 |
| Directory Management Group | (410)715-2076 | 5565 Sterrett Place | 21044 |
| Ad National | (410)715-6900 | 5565 Sterrett Place Suite 401 | 21044 |
| Simply Wireless Inc | (410)964-9400 | Columbia Mall | 21044 |
| Regional Telecommunications Inc | (410)995-1688 | 10103 Windstream Drive | 21044 |
You can also check out Telephone Service in Columbia