LONDON 19th March 2015 — IIJ Europe Limited (IIJ Europe), a London-based provider of systems integration and IT services in Europe and a wholly owned subsidiary of Internet Initiative Japan Inc. (IIJ, NASDAQ: IIJI, TSE1: 3774), one of Japan’s leading Internet access and comprehensive network solutions providers, today announced that it has been awarded a place as an IaaS (Infrastructure as a Service) supplier within the latest version of the UK government-operated G-Cloud framework, the G-Cloud 6. Effective as of February 2, 2015, it will allow IIJ Europe to assist the government and public sector bodies in procuring cloud computing services.

G-Cloud 6 is a cloud initiative of the UK government whose aims include more efficient implementation of ICT (Information and Communications Technology) and lower costs through the use of cloud computing services. Suppliers gain the right to participate in tenders by the various government bodies, and are also registered in an online catalogue called the “Digital Marketplace.” The Digital Marketplace allows organisations and bodies that invite tenders to search, select and purchase the cloud computing services from among the listed suppliers.

IIJ Europe—which benefits from the advanced technological expertise and operational experience that the IIJ Group has garnered in Japan—launched the cloud-based “IIJ GIO EU Service” in the European region in 2013. The company has since worked actively to strengthen its alliances with its partners, and to operate and enhance the information security management system. Adding the G-cloud Agreement to its portfolio greatly enhances the company’s position to cater for the cloud computing market place. IIJ Europe will continue to strive to communicate closely with its customers and to develop business with strong roots in the European region.

About IIJ Europe

IIJ Europe, based in London and Dusseldorf was formerly Exlayer established in 2001 and is now a wholly owned subsidiary of IIJ. IIJ Europe utilises and embraces the latest internet technologies to design, deliver and manage highly qualified and experienced IT solutions. The company also offers IIJ GIO EU Service, its flagship cloud computing service to European enterprises. For more information about the company, visit the IIJ Europe website at http://www.iijeurope.com/

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 companies provide total network solutions that mainly cater to high-end corporate customers. IIJ’s services include high-quality systems integration, cloud computing/data center services, security services, and Internet access. Moreover, IIJ has built one of the largest Internet backbone networks in Japan that is connected the United States, the United Kingdom and Asia. 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 website 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.

For inquiries, please contact:

IIJ Corporate Communications

Tel : +81-3-5205-6310, email: press@iij.ad.jp

IIJ Europe Limited