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, Mass., June 16 /PRNewswire-FirstCall/ -- 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 Pingo's 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 year's 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, Pingo's 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.

"Pingo's 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 Pingo's 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.

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 at 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.

MEDIA CONTACTS: Chris Ward Marty Querzoli
iBasis, Inc. Davies Murphy Group, Inc.
781-505-7500 781-418-2433
http://www.ibasis.com ibasis@daviesmurphy.com

SOURCE iBasis

Chris Ward of iBasis, Inc., +1-781-505-7500, or Marty Querzoli of Davies
Murphy Group, Inc., +1-781-418-2433, ibasis@daviesmurphy.com