July 10, 2012

Dex One Corporation to Announce Second Quarter 2012 Results on July 25

Results Release Distributed at 6:30 a.m. EDT

Conference Call at 8:30 a.m. EDT

CARY, N.C.--(BUSINESS WIRE)-- Dex One Corporation (NYSE: DEXO) will release second quarter 2012 results on Wednesday, July 25, at approximately 6:30 a.m. EDT. The release will be posted to the Investor Relations section of the company's website, www.DexOne.com. The company invites investors and other interested parties to participate in a conference call at 8:30 a.m. EDT on the same day to hear commentary regarding results. Alfred Mockett, CEO, and Greg Freiberg, executive vice president and CFO, will host the call. Remarks will be followed by a question and answer session.

Individuals within the United States can access the call by dialing 888-324-3181 - others should dial 312-470-7372. The pass code for the call is "Dex One." In order to ensure a prompt start time, please dial into the call by 8:20 a.m. EDT. In addition, a live webcast will be available atwww.DexOne.com and an archived version will be accessible for up to one year. A replay of the conference call can also be accessed from within the United States by dialing 888-566-0433 and internationally by dialing 203-369-3044. There is no pass code for the telephonic replay, which will be available through August 8, 2012.

About Dex One Corporation

Dex One Corporation (NYSE: DEXO) is a leading marketing solutions provider helping local businesses and their customers connect wherever and whenever they choose to search. Building on its heritage of delivering print-based solutions, the company provides integrated products and services to help its clients establish their digital presence and generate leads. Dex One's locally based marketing experts offer a broad network of local marketing solutions including online, mobile and print search solutions, such as DexKnows.com. For more information, visit www.DexOne.com.

Media Contact: Dex One Corporation Chris Hardman, 303-784-1351 chris.hardman@dexone.com or Investor Contact: Tyler Gronbach, 800-497-6329 invest@dexone.com

Source: Dex One Corporation

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