Company Name
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| Cable & Communications Corporation |
| CALL CENTERS INDIA INCORPORATED |
| Calling 10, LLC |
| Callsmart |
| Cape |
| Carrier Pigeon, LLC |
| Cause Based Commerce Incorporated |
| Central Telecom Long Distance, Inc. |
| CenturyLik QGS |
| CenturyLink Communications |
| CenturyLink Communications |
| CenturyLink Communications, LLC |
| CenturyLink ESI |
| CenturyLink Long Distance |
| CenturyLink Payphone |
| CenturyLink Public Communications, Inc. |
| CenturyLink Sales Solutions, Inc. |
| CenturyLink Teleservices |
| CenturyLink TS |
| CenturyTel Long Distance, LLC |
| CetnuryLink QC |
| ChosenWireless |
| CierraCom Systems |
| CINTEX WIRELESS LLC |
| Clear World Communications Corp |
| Clertech.com.inc |
| Clertech.com.inc |
| Cliq Communications LLC |
| Cliq Mobile |
| CloudCall, Inc. |
| Club Cellular |
| Coast International, Inc. |
| Coast To Coast Cellular Inc. |
| Collegiate Mobile |
| Combined Public Communications, LLC |
| Comcast Digital Phone |
| Comcast OTR1, LLC |
| Comcast Phone of North Dakota, LLC |
| Comlink Total Solutions Corp |
| Comm-Core, LLC |
| CommNet Cellular Inc. |
| Common Point LLC |
| CommPartners, LLC |
| Communications Venture Corporation |
| COMPAX MVNO Venture, Inc. |
| Computer Telephony Innovations |
| Comtech21, LLC. |
| Conectado, Inc. |
| Conexions LLC |
| Conexion Wireless |
| Consolidated Communications Enterprise Services, Inc. |
| Consolidated Communications Networks, Inc. |
| Consolidated Communications Operator Services, Inc. |
| Consolidated Telecom, Inc. |
| Consumer Telcom, Inc. |
| Contivio.com Corporation |
| Convergia, Inc. |
| Covad Communications Company |
| Covoda Communications, Inc. |
| Cox Mobile |
| Cox Wireless, LLC d/b/a Cox Mobile |
| Credo Mobile |
| Crexendo Business Solutions, Inc. |
| Cricket Communications, LLC |
| Cricket Wireless LLC |
| CrossConnect |
| Crown Castle Fiber LLC |
| Crown Correctional Telephone, Inc. |
| CSC Wireless, LLC |
| Culture Wireless Group, Inc |
| CVC CLEC, LLC |
| Cypress Communications, Inc. |