logo used between 1952 and 1985. A highly modified version of this logo is still used by the
Geospatial Information Authority of Japan to mark telecommunications structures on their maps. Established as a
state monopoly in August 1952 to take over the Japanese telecommunications system, was
privatized in 1985 to encourage competition in the country's telecom market, making Japan the second country in the world (
after the United States) to deregulate its
telecom market. In 1987, NTT made the largest stock offering to date, at US$36.8 billion. Because NTT owns most of Japan's
last mile infrastructure (including broadband
fibre connections), it has
oligopolistic control over most landlines in Japan. In order to stimulate local competition, the company was divided into a holding company (NTT) and three telecom companies (, , and
NTT Communications) in 1999. The NTT Law regulating NTT East and West requires them to serve only short-distance communications and obligates them to maintain fixed-line telephone service all over the country. They are also obligated to lease their unused optical fiber (
dark fiber) to other carriers at regulated rates. NTT Communications is not regulated by the NTT Law. In July 2010, NTT and
South African IT company
Dimension Data Holdings announced an agreement of a cash offer from NTT for Dimension Data's entire issued share capital, in £2.12bn ($3.24bn) deal. In late 2010, NTT's Japan-to-US transpacific network reached 400 Gbit/s. In August 2011, its network capacity was expanded to 500 Gbit/s. In 2021, Nippon Telegraph & Tel issued
green bonds worth about 300 billion
yen ($2.7 billion). The bonds include three tranches with maturities of 3, 5 and 10 years. The proceeds will be used for environmentally friendly projects (
renewable energy, energy-efficient broadband infrastructure, etc.).
Corporate history timeline • 1952 Nippon Telegraph and Telephone Public Corporation established • 1979 INS Concept announced • 1985 Nippon Telegraph and Telephone Corporation (NTT) incorporated as a private company • 1987 NTT listed on the First Section of the Tokyo Stock Exchange • 1988
NTT DATA Corporation started operations • 1990 VI&P Concept announced • 1992 NTT Mobile Communications Network, Inc. (presently NTT DOCOMO) started operations • 1994 Basic Concept for the Coming Multimedia Age announced • 1995 NTT DATA listed on the Second Section of the Tokyo Stock Exchange • 1996 21st Century R&D Vision announced • 1996 NTT DATA listed on the First Section of the Tokyo Stock Exchange • 1997 Digitization of communications network in Japan completed • 1998 Global Information Sharing Concept announced • 1998 NTT DOCOMO listed on the First Section of the Tokyo Stock Exchange • 1999 NTT's operations reorganized into a holding-company structure: businesses transferred to three new wholly owned subsidiaries (NTT East, NTT West, and NTT Communications) • 2002 prefecture-based subsidiaries of NTT East and NTT West started operations • 2002 "Vision for a New Optical Generation" announced • 2004 NTT Urban Development Corporation listed on the First Section of the Tokyo Stock Exchange • 2004 "NTT Group's Medium-Term Management Strategy" announced • 2008 Announcement of a new Medium-Term Management Strategy: "Road to Service Creation Business Group" • 2025 The rebranding of corporate identity (logo) designed by
Lippincott, to commemorate 40th anniversary, and the corporate name was changed from Nippon Telegraph and Telephone Corporation to NTT, Inc. == Subsidiaries ==