Palm Beach Gardens, Florida, August 22, 2007 — Dycom Industries, Inc. (NYSE: DY) will release its fiscal 2007 fourth quarter earnings on Tuesday, August 28, 2007, after the close of trading on the New York Stock Exchange.

Dycom has scheduled a conference call for Wednesday, August 29, at 9:00 a.m. (ET). To participate in the conference call, dial 888-428-4480 (United States) or 651-291-5254 (International) ten minutes before the conference call begins and ask for the "Dycom Earnings" conference call. A live webcast of the conference call will be available at http://www.dycomind.com. If you are unable to attend the conference call at the scheduled time, a replay of the live webcast will also be available at http://www.dycomind.com until Friday, September 28, 2007.

Dycom is a leading provider of specialty contracting services throughout the United States. These services include engineering, construction, maintenance and installation services to telecommunications providers, underground locating services to various utilities, including telecommunications providers, and other construction and maintenance services to electric utilities and others.