Nippon Telegraph & Telephone Corp. operates as a holding company which engages in the provision of telecommunication services. It operates through the following business divisions: Regional Communications, Long-Distance and International Communications, Mobile Communications, Data Communications, and Others. The Regional Communications division offers domestic intra-prefectural communication services such as fixed voice-related, Internet protocol (IP), and packet communications services; and sells telecommunications equipment. The Long Distance and International Communications division deals with the domestic intra-prefectural and international communications, and system integration services. The Mobile Communications division provides the mobile voice-related, IP, and packet communications services. The Data Communications division covers the system integration and network system services. The Other division engages in the real estate, finance, engineering, system integration and data processing services, and development of technologies and shared operations. The company was founded on August 1, 1952 and is headquartered in Tokyo, Japan.