PAETEC to Release 2008 First-Quarter Results

Business Wire, May 7, 2008

FAIRPORT, N.Y. -- PAETEC Holding Corp. (NASDAQ GS:PAET) plans to release its first-quarter 2008 results on Tuesday, May 13, 2008, and will host a conference call that day at 8:30 a.m. ET.

Conference Call details are as follows:

Call Date:          >
May 13, 2008
Call Time:          >
8:30 a.m. ET
US/Canada Dial in:  >
(800) 259-0251
International       >
(617) 614-3671
Passcode:           >
74620533

Webcast: www.paetec.com or http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=190031 &eventID=1836252

Replay details are as follows:

[TABLE OMITTED]

Replay Webcast: www.paetec.com or http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=190031 &eventID=1836252

About PAETEC

PAETEC (NASDAQ GS:PAET) is personalizing communications solutions for business customers across the United States. We offer a comprehensive suite of data, voice, and IP services, as well as enterprise communications management software, network security solutions, CPE, and managed services. For more information, visit www.paetec.com.

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