| Business | Phone |
| Adelphia 327 21 Misty Morning Dr, Columbia 29229 | (803) 736-9666 |
| Baker Consulting Llc 250 Berryhill Rd # 320, Columbia 29210 | (803) 612-7500 |
| Diversified Communication 3016 N Beltline Blvd, Columbia 29204 | (803) 782-2149 |
| Elegis Telecom 800 Huntington Ave, Columbia 29205 | (803) 931-0080 |
| Enterprise Technologies Inc 108 Buffalhead Pt, Columbia 29201 | (803) 252-5255 |