| Business | Phone |
| American Communications Co 8820 Two Notch Rd, Columbia 29223 | (803) 736-4743 |
| Bell South 400 Laurel St, Columbia 29201 | (803) 748-0270 |
| Bfg Communications 712 Richland St, Columbia 29201 | (803) 779-4555 |
| Calltech Communications 300 Saint Andrews Rd, Columbia 29210 | (803) 750-2339 |
| Elk Communication 1200 Main St # 701d, Columbia 29201 | (803) 212-4331 |
| Learfield Communications Inc 1001 Bluff Rd, Columbia 29201 | (803) 733-5286 |
| Morris Communications 832 Camp Ground Rd, Columbia 29203 | (803) 714-6221 |
| Partners Communications Svc 368 Buckner Rd, Columbia 29203 | (803) 786-0748 |
| Pinnacle Towers Inc 115 New Way Rd, Columbia 29223 | (803) 788-7184 |
| Seneca Communications 400 Northeast Dr # M, Columbia 29203 | (803) 333-0072 |
| Xspedius Communications 1401 Main St, Columbia 29201 | (803) 933-0505 |
| U Talk Communications 4618 Main St, Columbia 29203 | (803) 735-7676 |