Nippon Telegraph and Telephone Corporation (NTT) operates as a prominent telecommunications entity, serving customers both within Japan and across international borders. Its extensive business activities are structured into several distinct segments. The Integrated ICT Business delivers a wide range of services, including mobile communications, inter-prefectural domestic calls, international connectivity, customized solutions, and system development. Concurrently, the Regional Communications Business is dedicated to providing intra-prefectural communication services along with associated ancillary offerings. Catering to a global clientele, the Global Solutions Business specializes in areas such as consulting, software and system development, network architecture, cloud platforms, and worldwide data center operations. Finally, the "Others" segment encompasses diverse ventures like real estate and energy. This Tokyo, Japan-headquartered company was founded in 1952.