일본전신전화 (NTT) 

NTT, Inc. operates as a telecommunications company in Japan and internationally. It operates through Integrated ICT Business, Regional Communications Business, Global Solutions Business, and Others segments. The Integrated ICT Business segment offers mobile phone, domestic inter-prefectural communications, international communications, solutions, and system development and related services. Its Regional Communications Business segment provides intra-prefectural communications and related ancillary services. The Global Solutions Business segment offers system integration, network system, cloud, global center, and related services, as well as consulting, managed, and system and software development services. Its Others segment engages in the real estate and construction, energy, and other businesses. The company was formerly known as Nippon Telegraph and Telephone Corporation and changed its name to NTT, Inc. in July 2025. NTT, Inc. was founded in 1952 and is headquartered in Tokyo, Japan.