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iBasis Reports Record Volume Of International Phone Calls Carried Over Internet On Mother's Day

Latin Americans Take Top Honors For Calling Most and Talking Longest During Celebration of Mom's Special Day

BURLINGTON, MASS. - May 16, 2007 - iiBasis, Inc. (NASDAQ: IBAS), the global VoIP company™, today announced it carried a record volume of phone traffic over the Internet during Mother's Day. One of the world's leading wholesale carriers of international long distance telephone calls - and operator of the world's most extensive international Voice over Internet Protocol (VoIP) network - iBasis terminated 54.9 million minutes of traffic during the holiday. The mark topped the previous record by 1.3 million minutes, set on Christmas Day 2006, and represented a 27.50 percent increase over Mother's Day 2006.

Data generated by the company's network operating center (NOC) showed The iBasis Network™ completed a total of 7,139,922 calls during Mother's Day. Analysis also showed Latin America overwhelmingly taking top honors in Mother's Day phoning activity with countries from the region dominating rankings in call volume, increase over prior year and over average Sunday traffic, and length of call duration (see below for complete rankings).

"With the help of efficient VoIP networks like ours, calling Mom on her special day has become fairly economical, no matter where in the world she is," said Ofer Gneezy, president and CEO of iBasis. "The international calling market is already more than 300 billion minutes-per-year, and it's growing about 14% per year. Increasingly, that traffic is carried by VoIP carriers, and I'm proud that iBasis continues to lead the way."

Below are additional findings on Mother's Day calling habits based upon the company's international traffic volume and data analysis conducted by the iBasis NOC 1. Rankings are in descending order and reflect calls originating from outside of the countries highlighted.

  • Ten Most-Called Countries on Mother's Day: Mexico, Brazil, United States, China, Peru, Colombia, El Salvador, Turkey, India, Argentina.
  • Top five country calling increases from Mother's Day 2006 to 2007: United States, El Salvador, India, Peru, Argentina.
  • Countries with calls of the longest average duration On Mother's Day (in minutes): Mexico (17.7), Laos (14.7), Serbia (13.1), Chile (13.1), Lithuania (12.7), Portugal (12.5), El Salvador (12.5), Argentina (12.4), Hungary (12.1), Malta (11.4).
  • Top five countries showing greatest call volume increases on Mother's Day versus annual Sunday average: Colombia, Peru, Brazil, United States, China.

Based on analyst firm Telegeography's projections, and iBasis' current annual run rate of more than 13 billion minutes of traffic, the company carries an estimated 20 percent of the world's international VoIP traffic. The iBasis Network is a global VoIP platform with over 1,000 points of presence in more than 100 countries. The lower cost of IP infrastructure enables iBasis to expand its network to accommodate dramatic growth quickly and with relatively low capital expenditure. Record traffic periods, which typically occur during major religious and national holidays such as Christmas, New Year's, Mothers' Day, Ramadan, Eid, Diwali, and Chinese New Year, demonstrate the scalability of The iBasis Network. Phone traffic on these holidays often increases by 30 percent or more over non-holiday traffic.

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® web-based offering (www.pingo.com) 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 2. 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.



1Findings are based solely on iBasis traffic which may not accurately represent all international traffic.

2Telegeography 2007 and iBasis 2006 traffic.

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.