Framingham, Mass.—March 27, 2006—Netezza Corporation, the data warehouse appliance market leader, today announced that iBasis, the global VoIP company and one of the 10 largest carriers of international voice traffic in the world, will deploy the enterprise-class Netezza Performance Server® (NPS®) data warehouse appliance to improve Call Detail Record (CDR) analysis for its VoIP services. To accommodate rapid growth and increasing demand for wholesale and retail VoIP services, iBasis is leveraging the capabilities of Netezza to accelerate data load cycles and optimize system performance to enhance both customer experience and profitability.

With an annual run rate of more than nine billion minutes of international traffic and an annual growth of more than 45 percent, iBasis has experienced a dramatic increase in data volumes in the sophisticated back-office systems that are critical to running its business. By deploying the NPS data warehouse appliance, iBasis can execute complex analyses against increasingly detailed data to further enhance its management of call routing and rating to optimize gross profit.

The speed and depth of analysis now possible with the NPS system strengthens iBasis’ ability to satisfy the increased demand for VoIP services by its telecommunications carrier and retail prepaid customers. End users demanding new cost-efficient communications services represent a tremendous revenue growth opportunity that is driving the resurgence of the telecommunications industry.

“Our sophisticated back office systems have enabled us to turn complexity into competitive advantage by giving us the ability to manage the routing and rating of millions of international calls at a very high level of granularity,” said Paul Floyd, senior vice president of engineering, R&D and operations for iBasis. “Deploying the NPS system enhances that ability while providing significant operating efficiencies. It will be a vital tool in accelerating future improvements, growth and profitability.”

“iBasis is a prime example of a business that will benefit greatly from the unbeatable performance and capabilities of the NPS system,” said Jit Saxena, CEO and co-founder, Netezza Corp. “With the growth in new service offerings and an increasingly educated audience, today’s telecommunications industry must find a new high-performance method of analyzing data to maintain customer satisfaction and loyalty. Similar to other Netezza customers in the telecom industry, iBasis is leveraging the bottom-line business value that the NPS system delivers.”

The Netezza Performance Server system is the market-leading data warehouse appliance, built specifically to analyze terabytes of detailed data 10 to 50 times faster than existing data warehouse options, at half the cost. The NPS system stores, filters and processes terabytes of records within a single unit, analyzing only the relevant information for each query. Netezza has placed the CPU power next to the data, allowing the NPS system to speed through processes that would occupy most data warehouse systems for hours, or even days, thereby enabling dramatic increases in productivity across the organization. Customers who have recognized the performance benefits of Netezza’s approach include Ahold USA, Amazon.com, American Red Cross, Catalina Marketing, Cingular Wireless, CNET Networks, Epsilon, Neiman Marcus, Orange UK, Premier, Inc., Shoppers Drug Mart Corporation, The Carphone Warehouse and The TJX Companies.

About iBasis
Founded in 1996, iBasis (OTCBB: 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, which are sold through major distributors and available at retail stores throughout the U.S. iBasis customers include many of the largest telecommunications carriers in the world, including AT&T, Cable & Wireless, China Mobile, China Unicom, MCI, Sprint, Skype, and Telefonica. iBasis carried approximately 8 billion minutes of international voice over IP (VoIP) traffic in 2005, and is one of the ten largest carriers of international voice traffic in the world¹. For four consecutive years service providers named iBasis the best international wholesale carrier in ATLANTIC-ACM’s annual International Wholesale Carrier Report Card². iBasis was also ranked among the fastest-growing technology companies in New England in the 2002, 2003, and 2004 Technology Fast 50 programs sponsored by Deloitte & Touche. 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.

About Netezza Corporation
Netezza is the market-leading provider of enterprise-class data warehouse appliances that deliver breakthrough performance and ease of use at a fraction of the cost of traditional data warehouses. The Netezza Performance Server system enables Fortune 1000 customers with terabytes of dynamic, detailed data to dramatically simplify even the most complex Business Intelligence (BI) initiatives. By architecturally integrating database, server and storage within a single appliance, the NPS system delivers 10 to 50 times the performance at half the cost of existing systems. Based in Framingham, Mass., Netezza has offices in Washington, DC, the United Kingdom and Asia Pacific. The Company is backed by leading venture capital firms, including Matrix Partners, Charles River Ventures, Battery Ventures, Orange, Sequoia Capital and Meritech Capital Partners. For more information about Netezza, please visit www.netezza.com.

¹ Telegeography 2005 data compared with iBasis 2004 traffic volume.
² ATLANTIC-ACM International Wholesale Carrier Report Card – 2002, 2003, 2004, & 2005.

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