IIJ to Use DoCoMo 3G Network to Provide Corporate Data Communications Services as MVNO

Internet Initiative Japan Inc. (IIJ) and NTT DoCoMo today announced a preliminary agreement under which IIJ will become the first mobile virtual network operator (MVNO) to use DoCoMo’s 3G FOMA™ network to offer corporate data communications services supported by DoCoMo’s HSDPA technology. Details of actual operations are currently under discussion. As the first step, IIJ, one of Japan’s leading Internet-access and comprehensive network solutions providers, plans to offer corporate customers an Internet connection service that supports HSDPA 3.6 Mbps high-speed mobile data communications starting in January 2008. The goal is to meet a growing need among corporate users to access company networks via secure mobile broadband. IIJ also plans to provide comprehensive outsourcing services for mobile data communications, including mobile data-communications terminals, network and data-center management and system maintenance. IIJ and DoCoMo look forward to serving the corporate market with high-speed mobile data communications. About IIJ Founded in 1992, Internet Initiative Japan Inc. (IIJ, NASDAQ: IIJI, Tokyo Stock Exchange TSE1: 3774) is one of Japan's leading Internet-access and comprehensive network solutions providers. IIJ and its group of companies provide total network solutions that mainly cater to high-end corporate customers. The company's services include high-quality systems integration and security services, Internet access, hosting/housing, and content design. Moreover, the company has built one of the largest Internet backbone networks in Japan, and between Japan and the United States. IIJ was listed on Nasdaq in 1999 and on the First Section of the Tokyo Stock Exchange in 2006. For more information about IIJ, visit the IIJ Web site at http://www.iij.ad.jp/en/. The statements within this release contain forward-looking statements about our future plans that involve risk and uncertainty. These statements may differ materially from actual future events or results. Readers are referred to the documents furnished by Internet Initiative Japan Inc. with the SEC, specifically the most recent reports on Forms 20-F and 6-K, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. About NTT DoCoMo NTT DoCoMo is the world's leading mobile communications company. DoCoMo serves about 53 million customers, including 40 million people subscribing to FOMA™, launched as the world’s first 3G mobile service based on W-CDMA in 2001. DoCoMo also offers a wide variety of leading-edge mobile multimedia services, including i-mode™, the world's most popular mobile e-mail/Internet service, used by more than 47 million people. With the addition of credit-card and other e-wallet functions, DoCoMo mobile phones have become highly versatile tools for daily life. NTT DoCoMo is listed on the Tokyo (9437), London (NDCM) and New York (DCM) stock exchanges. For more information, visit www.nttdocomo.com. i-mode and FOMA are trademarks or registered trademarks of NTT DoCoMo, Inc. in Japan and other countries. NTT DoCoMo’s FOMA service is only available to subscribers in Japan.