| AT
& T - Charleston-Military Bases |
| Atlantic
Broadband, LLC |
| ATT/D |
| ATT/T |
| Broadstar
Services, LLC |
| Charter
Communication |
| Chester
Telephone |
| Comcast
Communications |
| Connexion
Technologies |
| Crown
Castle Solutions Corporation |
| Davidson
Cable |
| Duke
Energy Telecommunications Division |
| Embarq
(formerlySprint United Telephone) |
| Fairfield
Communications |
| Farmers
Telephone |
| Fort
Mill Telephone (Comporium) |
| Hargray |
| Hargray
Inc. |
| Hargray
Telephone Company |
| Home
Telecom |
| Home
Telephone |
| Horry
County Government |
| Horry
Telephone |
| ITC
Deltacom |
| Klip
Interactive |
| Knology
of the Low Country |
| Lancaster
Telephone (Comporium) |
| Level
3 Communications |
| McClellanville
Telephone (TDS Telecom) |
| MCI |
| Medical
University of South Carolina |
| NCR
Corporation |
| Northland
Cable Television-Greenwood |
| Norway
Telephone (TDS Telcom) |
| Ocean
Lake Family Campground |
| Palmetto
Bluff-May River LLC |
| Palmetto
Net |
| Palmetto
Rural Telephone |
| PBT
Telecom Inc |
| Qwest
Communications |
| Richland
School District Two |
| Rock
Hill Telephone (Comporium) |
| SC
State Government |
| SCANA
Communications |
| Shentel
Converged Services |
| South
Carolina DOT |
| Sprint
Nextel |
| St
Stephen Telephone (TDS Telecom) |
| Time
Warner Cable |
| Time
Warner Telecom |
| University
of South Carolina - Columbia |
| US
Cable Coastal (Comcast) |
| Verizon |
| Williston
Telephone (TDS Telcom) |
| Windstream |
| Xspedius
DBA TimeWarner Telecom |
| YRT2 |
