Pingo Named a Finalist for 2009 LinkShare Golden Link Award

Nomination for the Golden Link International Advertiser of the Year Category Recognizes Pingo’s Innovative Global Affiliate Program

Burlington, MA – 06/16/2009 – Pingo, the prepaid calling service from iBasis (NASDAQ: IBAS), today announced that it has been named a Finalist in the Sixth Annual LinkShare Golden Link Awards. The awards are hosted by LinkShare Corporation, which provides effective online search, lead generation and affiliate marketing programs and has been the exclusive platform for Pingos affiliate marketing program since 2004.
The awards recognize the best-of-breed practices of merchants who do business on the World Wide Web. The Sixth Annual LinkShare Golden Link Awards are part of the LinkShare Symposium, an annual event that brings together hundreds of leading companies in e-commerce. The awards will be hosted by Joan Rivers, world famous comedian and recent winner of the NBC television show, Celebrity Apprentice, and they will take place on June 23 in New York City.
Pingo is a service of iBasis, one the largest carriers of international phone calls in the world(1). iBasis provides international service for approximately 1,000 carriers worldwide, including many of the largest household brand names in telecommunications. Pingo allows consumers to access the great savings of direct-to-wholesale calling minutes on an as-needed basis without the hidden fees and surcharges typical of prepaid calling cards or the contractual obligations typical of carrier plans. A related offering, Pingo Business, provides small and medium-sized business with similar service for up to 999 employees and is accompanied by easy-to-use online management tools. Pingo and Pingo Business customers can access the service with regular fixed or mobile phones in 35 countries, including the U.S., Australia, Canada, China, the U.K., France, Germany, Israel, Japan, Russia and Thailand. Pingo service via SoftPhone can be used with PCs anywhere in the world where there is Internet access.
Pingo has been nominated for an award for International Advertiser of the Year, which highlights leadership and innovation in global online advertising and affiliate programs. Nominees for 2008 in this category include Avon and Blue Nile, with NET-A-PORTER UK, named last years winner.

Pingo was nominated to honor its popular global affiliate marketing program. Pingo possesses one of the best customer retention rates in its industry with 93 percent of all customers recharging their cards. Pingo also provides a proven Internet sales model and no requirement for customers to purchase new equipment or change phone companies. As a result, Pingos global affiliate program enables partner organizations to offer Pingo easily and effectively to their customers on their Websites, while providing multiple opportunities for partners to earn revenue.

Pingos global affiliate program gives our partners an easy-to-sell service and numerous opportunities to generate revenue, said Jayesh Patel, vice president at iBasis. This recognition by LinkShare validates Pingos approach to online business and member support, as well as the success that our affiliates continue to enjoy.

About iBasis
Founded in 1996, iBasis (NASDAQ: IBAS) is a leading wholesale carrier of international long distance telephone calls and a provider of retail prepaid calling services and enhanced services for mobile operators. iBasis customers include KPN, KPN Mobile, E-Plus, BASE, TDC and many other large telecommunications carriers such as Verizon, Vodafone, China Mobile, China Unicom, IDT, Qwest, Skype, Telecom Italia, Telefonica, and Yahoo. In October 2007, iBasis acquired KPN Global Carrier Services to create one of the three largest carriers of international voice traffic in the world (1), and KPN became a majority stockholder of iBasis. iBasis carried approximately 24 billion minutes of international voice traffic in 2008. The Company can be reached at its worldwide headquarters in Burlington, Mass., USA at +1 781-505-7500 or on the Internet at www.ibasis.com.

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1.) Based on Telegeography 2008 and iBasis and KPN Global Carrier Services pro forma 2007 traffic.

iBasis and Pingo are registered trademarks of iBasis. All other trademarks are the property of their respective owners.

Except for historical information, all of the expectations, plans and assumptions contained in the foregoing press release constitute forward-looking statements under Section 21E of the Securities Exchange Act of 1934 and involve risks and uncertainties that could cause results to vary materially. For a description of certain of these risks and uncertainties please read the Company’s most recent Annual Report on Form 10-K and other periodic and current reports, all of which are available atwww.sec.gov. Such forward-looking statements are only as of the date they are made, and we have no current intention to update any forward-looking statements.