Pingo Named Finalist for Prestigious Award That Recognizes Best of Breed Business Practices on World Wide Web

Business Wire, June 15, 2007

Prepaid Calling Service Also Named to LinkShare Premium Partner Program

BURLINGTON, Mass. -- Pingo([R]) (www.pingo.com), the online prepaid calling card service of iBasis (NASDAQ:IBAS), today announced it has been named a Finalist in the Fourth Annual LinkShare Golden Link Awards hosted by LinkShare Corporation, a leading global provider of services and a distribution network e-retailers use to create, manage and optimize successful affiliate marketing programs. The awards recognize the best of breed practices of merchants who do business on the World Wide Web. The Fourth Annual LinkShare Golden Link Awards are part of LinkShare Symposium 2007, an annual event presented by LinkShare Corporation that brings together hundreds of leading companies in e-commerce, and will be announced at a ceremony on June 19 in New York City.

Pingo offers high-quality long distance calling service on a prepaid basis, enabling consumers from more than 35 countries to realize the dramatic cost-savings of Voice over Internet Telephony (VoIP) from regular fixed or mobile phones without any additional hardware or software. Pingo is available online and may be purchased via credit card or PayPal. The service features a multi-lingual website and voice prompts in five languages (English, Spanish, French, Chinese and Portuguese), as well as the ability to view rates in more than 38 currencies and make payments in four currencies. Pingo also offers convenient features such as PIN-less dialing, on-line call history reporting and optional automatic account recharge.

Pingo is nominated for an award for "Best Online Merchandising Campaign," which highlights successful performance-based merchandising/marketing efforts in e-commerce. Through a variety of sales promotions during 2006, Pingo introduced a wider range of consumers and affiliate partners to the benefits of its online calling program, increasing its base of customers and affiliates worldwide. Award finalists last year included American Express, Lands' End and Techbargains (named winner).

Also, LinkShare Corporation has named Pingo a member of its "Premium Partner Program." This designation informs LinkShare affiliates that Pingo adheres to a rigid set of standards that address a wide range of issues, from transaction response times to prompt affiliate payment. The criteria used to evaluate and select Premium Partners has been created through the feedback of hundreds of LinkShare affiliates, along with the company's Affiliate Advisory Board.

"When it comes to e-commerce, LinkShare is a leader and a visionary," said Ofer Gneezy, president and CEO of iBasis. "We are very pleased to have Pingo recognized by LinkShare for both its marketing efforts and its efficient business practices and professional interaction with affiliates. It is a gratifying validation of our approach to our online business and partner support."

About Pingo

Taking advantage of The iBasis Network, Pingo enables consumers to realize the cost-savings of VoIP or Internet telephony from regular fixed or mobile phones without any need for additional hardware or software. Pingo offers consumers high-quality long distance service on a prepaid basis, along with a host of convenient usability features. Pingo customers save on calls to both landline and mobile phones in almost every country. Mobile phone users in particular can save as much as 90 percent on international calls by using Pingo's toll-free access and lower rates. Pingo minutes can be purchased with credit and debit cards, as well as PayPal, at Pingo.com. Customers can access Pingo from toll-free and local access numbers in 35 countries, including the U.S., Australia, Canada, China, the U.K., France, Germany, Israel, Japan, Russia, and Thailand.

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, including the Pingo[R] web-based offering and disposable calling cards that are sold through major distributors and available at retail stores throughout the U.S. iBasis customers include many of the largest telecommunications carriers, including AT&T, Verizon, China Mobile, China Unicom, IDT, Qwest, Skype, Telecom Italia, and Telefonica. iBasis carried more than 11 billion minutes of international Voice over IP (VoIP) traffic in 2006, and is one of the largest carriers of international voice traffic in the world. The Company can be reached at its worldwide headquarters in Burlington, Massachusetts, USA at 781-505-7500 or on the Internet at www.ibasis.com.

iBasis and Pingo are registered marks, The iBasis Network and the global VoIP company are trademarks of iBasis, Inc. 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. Important factors that could cause actual results to differ materially from such forward-looking statements include, but are not limited to, (i) the Company's ability to execute its business plan; (ii) the extent of adoption of the Company's services and the timing and amount of revenue and gross profit generated by these services; (iii) fluctuations in the market for and pricing of these services; (iv) the other factors described in the Company's Quarterly Report on Form 10-Q for its most recently completed fiscal quarter and Annual Report on Form 10-K for its most recently completed fiscal year, all of which are available at http://www.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.