2) Full year guidance for net revenue, adjusted EBITDA and free cash flow originally provided on March 1, 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. SAFE HARBOR PROVISION Certain statements contained in this press release regarding Dex One Corporation’s future operating results, performance, business plans, prospects, guidance and any other statements not constituting historical fact are “forward-looking statements” subject to the safe harbor created by the Private Securities Litigation Reform Act of 1995. Where possible, the words “believe,” “expect,” “anticipate,” “intend,” “should,” “will,” “would,” “planned,” “estimated,” “potential,” “goal,” “outlook,” “may,” “predicts,” “could,” or the negative of such terms, or other comparable expressions, as they relate to Dex One Corporation or its management, have been used to identify such forward-looking statements. All forward-looking statements reflect only Dex One Corporation’s current beliefs and assumptions with respect to future business plans, prospects, decisions and results, and are based on information currently available to Dex One Corporation. Accordingly, the statements are subject to significant risks, uncertainties and contingencies, which could cause Dex One Corporation’s actual operating results, performance or business plans or prospects to differ materially from those expressed in, or implied by, these statements. Factors that could cause actual results to differ materially from current expectations include risks and other factors described in Dex One Corporation’s publicly available reports filed with the SEC, which contain a discussion of various factors that may affect Dex One Corporation’s business or financial results. Such risks and other factors, which in some instances are beyond Dex One Corporation’s control, include: the continuing decline in the use of print directories; increased competition, particularly from existing and emerging digital technologies; ongoing weak economic conditions and continued decline in advertising sales; our ability to collect trade receivables from customers to whom we extend credit; our ability to generate sufficient cash to service our debt; our ability to comply with the financial covenants contained in our debt agreements and the potential impact to operations and liquidity as a result of restrictive covenants in such debt agreements; our ability to refinance or restructure our debt on reasonable terms and conditions as might be necessary from time to time; increasing interest rates; changes in the company’s and the company’s subsidiaries credit ratings; changes in accounting standards; regulatory changes and judicial rulings impacting our business; adverse results from litigation, governmental investigations or tax related proceedings or audits; the effect of labor strikes, lock-outs and negotiations; successful realization of the expected benefits of acquisitions, divestitures and joint ventures; our ability to maintain agreements with CenturyLink, AT&T and other major Internet search and local media companies; our reliance on third-party vendors for various services; and other events beyond our control that may result in unexpected adverse operating results. Dex One Corporation is not responsible for updating the information contained in this press release beyond the published date, or for changes made to this document by wire services or Internet service providers. This press release is being furnished to the SEC through a Form 8-K. The company’s Quarterly Report on Form 10-Q for the period ended March 31, 2012 to be filed with the SEC may contain updates to the information included in this release.