KDDI Corporation is a leading Japanese telecommunications provider offering a comprehensive range of fixed‐line, mobile and data communication services. Headquartered in Tokyo, the company operates one of Japan’s largest integrated networks, delivering reliable broadband, fiber‐to‐the‐home (FTTH) access and next‐generation mobile connectivity under its flagship “au” brand. Beyond consumer services, KDDI supports a diverse customer base with enterprise‐grade networking solutions and cloud‐based offerings.
The company’s portfolio spans 4G LTE and 5G mobile services, international data carriage, IoT (Internet of Things) platforms and managed ICT (information and communications technology) solutions. KDDI also manages a global network of data centers, providing colocation, network security and hybrid cloud connectivity to businesses in sectors such as finance, manufacturing and retail. Its end‐to‐end digital services include system integration, application development and cybersecurity support.
Formed in 2000 through the merger of DDI Corporation, KDD Corporation and IDO Corporation, KDDI has grown into Japan’s second‐largest telecom operator. The company serves customers throughout Japan and maintains a presence in Asia‐Pacific, North America and Europe, catering to multinational enterprises and international carriers. KDDI’s American depository receipts trade on the OTC Markets under the symbol KDDIY, complementing its primary listing on the Tokyo Stock Exchange.
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