au

KDDI Corporation, operating under the "au" brand, stands as one of Japan's leading mobile network operators. Utilizing Mobile Country Code (MCC) 440, which identifies Japan, and Mobile Network Code (MNC) 73, au provides comprehensive mobile communication services across the nation. Competing fiercely with NTT Docomo and SoftBank, KDDI au has consistently pushed the boundaries of technological innovation, including early adoption of 4G LTE and a significant rollout of 5G services. Beyond its core network services, KDDI au offers a diverse range of services and products, including mobile payment solutions, smart home devices, and entertainment content, demonstrating its commitment to providing a holistic digital lifestyle ecosystem for its subscribers. Japan, situated in East Asia, is a mature mobile market with a high penetration rate. KDDI au plays a crucial role in connecting millions of people across the country. With a focus on customer satisfaction and cutting-edge technology, au has secured a prominent position in the Japanese telecommunications landscape. While its primary focus area is Japan, KDDI also has strategic international partnerships, impacting connectivity in several parts of the Asia & Middle East, through roaming agreements and technology collaborations, contributing to the region's interconnectedness. Furthermore, KDDI's initiatives support the continuous enhancement of mobile communication across Japan, especially in preparation for significant events like the Olympic Games where reliable and fast connectivity is paramount.