Centennial Communications Appoints John A. de Armas President, Caribbean Operations.

Business Editors

WALL, N.J.--(BUSINESS WIRE)--June 17, 2003

Centennial Communications Corp. (NASDAQ: CYCL) today announced John A. de Armas has been appointed to the position of president, Caribbean operations. Mr. de Armas joined Centennial in February 2002 as president, Centennial Dominicana and was promoted to executive vice president, Caribbean operations in October 2002.

Previously, Mr. de Armas was president of Home Shopping Espanol, a division of Home Shopping Network, where he developed and launched markets in Puerto Rico, Mexico, and the top 20 Hispanic markets in the U.S., reaching an audience of over 40 million Hispanics. Prior to that, he was vice president of International Strategy and Marketing with Phelps Dodge International Corporation. Prior to Phelps Dodge, Mr. de Armas was in charge of KPMG's South Florida consulting practice.

"I am very happy John has accepted the position of president, Caribbean operations. Since his arrival, John's contributions to Centennial have been outstanding. His knowledge of our operations, extensive background and proven leadership skills will continue to be an asset to Centennial," said Michael J. Small, chief executive officer.

Centennial is one of the largest independent wireless telecommunications service providers in the United States and the Caribbean with approximately 17.1 million Net Pops and approximately 929,700 wireless subscribers. Centennial's U.S. operations have approximately 6.0 million Net Pops in small cities and rural areas. Centennial's Caribbean integrated communications operation owns and operates wireless licenses for approximately 11.1 million Net Pops in Puerto Rico, the Dominican Republic and the U.S. Virgin Islands, and provides voice, data, video and Internet services on broadband networks in the region. Welsh, Carson Anderson & Stowe and an affiliate of the Blackstone Group are controlling shareholders of Centennial. For more information regarding Centennial, please visit our websites at www.centennialcom.com and www.centennialpr.com.

Cautionary statement for purposes of the "Safe Harbor" provision of the Private Securities Litigation Reform Act of 1995: Information in this release that involves Centennial's expectations, beliefs, hopes, plans, projections, estimates, intentions or strategies regarding the future are forward-looking statements. Such forward-looking statements are subject to a number of risks, assumptions and uncertainties that could cause the Company's actual results to differ materially from those projected in such forward-looking statements. These risks, assumptions and uncertainties include, but are not limited to: our substantial debt obligations; the availability and cost of additional capital to fund our operations, including the need to refinance and/or amend existing indebtedness; restrictive covenants and consequences of default contained in our financing arrangements, which limit how we conduct business; the competitive nature of the telecommunications industry in the areas in which we operate; market prices for wireless services may continue to decline in the future; general economic, business, political and social conditions in the areas in which we operate, including the less developed Caribbean region; fluctuations in currency values; continued overbuilding by other wireless service providers in our U.S. wireless markets and the effects of increased competition in our markets, which may cause a reduction in roaming revenues; increased subscriber cancellations; a continued reduction of prices charged and lower average revenue per subscriber; our dependence on roaming agreements for a material portion of our U.S. wireless revenues and the continued price declines in roaming rates and potential reduction of roaming minutes of use; the ability to attract and retain qualified personnel; that our coverage areas are not as extensive as those of other wireless operators which may limit our ability to attract and retain customers; the effects of governmental regulation of the telecommunications industry; changes and developments in technology, including our ability to upgrade our networks to remain competitive and our ability to anticipate and react to frequent and significant technological changes; and other risks referenced from time to time in the Company's filings with the Securities and Exchange Commission. All forward-looking statements included in this release are based upon information available to Centennial as of the date of the release, and we assume no obligation to update or revise any such forward-looking statements.