- Alpheus
- AT&T
- BellSouth
- BellSouth Long Distance
- Broadwing
- Cameron Telephone Company
- Centennial Wireless
- CenturyTel
- Cingular Wireless
- Consolidated Communications
- Cox Communications
- Deltacom
- Eatel
- Embarq
- Entergy
- FPL FiberNet
- Global Crossing
- Global Data Systems
- Interstate Fibernet (IFN)
- KDL
- Lafayette Utilities System
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- Lafourche Telephone Company
- Level3
- Lightcore
- Norlight
- NuVox
- Phonoscope
- PPL Telecom
- Qwest
- Southern Light
- Sprint Nextel
- Stratos
- Telepak Networks
- Time Warner Telecom
- T-Mobile
- Vanco
- Verizon Business
- Verizon Wireless
- Windstream
- XO Communications
- Xspedius Communications
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