1. Pre-Transaction Corporate Structure of PAETEC Regulated Entities and Windstream 100% PAETEC Holding Corp. (“PAETEC”) PAETEC Corp. PaeTec Communications, Inc. (“PCI”) McLeodUSA LLC 100% McLeodUSA Telecommunications Services L.L.C. (“McLeodUSA”) 100% Windstream Corporation (“Windstream”) Windstream’s Existing Operating Subsidiaries Peach Merger Sub, Inc. (“MergerCo”) 100%

2. Illustration of the Transaction 100% PAETEC Holding Corp. (“PAETEC”) PAETEC Corp. PaeTec Communications, Inc. (“PCI”) McLeodUSA LLC 100% McLeodUSA Telecommunications Services L.L.C. (“McLeodUSA”) 100% Windstream Corporation (“Windstream”) Windstream’s Existing Operating Subsidiaries Peach Merger Sub, Inc. (“MergerCo”) 100% MergerCo merges with and into PAETEC, with PAETEC surviving the merger

3. Post-Transaction Corporate Structure of PAETEC Regulated Entities and Windstream 100% PAETEC Holding Corp. (“PAETEC”) PAETEC Corp. PaeTec Communications, Inc. (“PCI”) McLeodUSA LLC 100% McLeodUSA Telecommunications Services L.L.C. (“McLeodUSA”) 100% Windstream Corporation (“Windstream”) Windstream’s Existing Operating Subsidiaries 100%