爱普生易用投影机助力都市租房族 娱乐生活更精彩
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 Logo used since July 2025, incorporating the "Dynamic Loop" logomark used since 1985 | |
 Headquarters at Otemachi 1st Square in ōtemachi, Chiyoda, Tokyo | |
Native name | NTT株式会社 |
|---|---|
Romanized name | NTT kabushiki gaisha |
| Formerly | Nippon Telegraph and Telephone Corporation (1985–2025) |
| Company type | Public (Statutory kabushiki gaisha) |
| |
| Industry | Telecommunications |
| Predecessor | Nippon Telegraph and Telephone Public Corporation |
| Founded | 1 April 1985 |
| Founder | Government of Japan |
| Headquarters | ōtemachi, Chiyoda, Tokyo, Japan |
Key people |
|
| Products | |
| Revenue |  ￥11.94 trillion (2021)[1] |
| ￥1.67 trillion (2021)[1] | |
| ￥1.12 trillion (2021)[1] | |
| Total assets | ￥22.96 trillion (2021)[1] |
| Total equity |  ￥8.20 trillion (2021)[1] |
| Owner | Minister of Finance (34.25%)[2] |
Number of employees | 303,350 (2021)[1] |
| Parent | NTT Group |
| Subsidiaries | |
| Website | group global |
NTT, Inc.[a] (formerly known as Nippon Telegraph and Telephone Corporation[b]) is a Japanese telecommunications holding company headquartered in Tokyo, Japan. Ranked 55th in Fortune Global 500, NTT is the fourth largest telecommunications company in the world in terms of revenue,[3] as well as the third largest publicly traded company in Japan after Toyota and Sony, as of June 2022.[4] In 2023, the company was ranked 56th in the Forbes Global 2000.[5] NTT was the world's largest company by market capitalization in the late 1980s, and remained among the world's top 10 largest companies by market capitalization until the burst of the Dot-com bubble in the early 2000s.[6]
The company traces its origin to the national telegraph service established in 1868, which came under the purview of the Ministry of Communications in the 1880s as part of a postal, telegraph and telephone service. In 1952, the telegraph and telephone services were spun off as the government-owned Nippon Telegraph and Telephone Public Corporation[c]. Under Prime Minister Yasuhiro Nakasone, the company was privatised in 1985 along with the Japan Tobacco and Salt Public Corporation and subsequently the Japanese National Railways two years later, adopting the previous name until July 2025.[7] While NTT has been listed on the Tokyo Stock Exchange since 1987, the Japanese government still owns roughly one-third of NTT's shares, regulated by the NTT Law (Law Concerning Nippon Telegraph and Telephone Corporation, Etc.[d]).[8]
The company is incorporated pursuant to the NTT Law.[8] The purpose of the company defined by the law is to own all the shares issued by NTT East and NTT West and to ensure proper and stable provision of telecommunications services all over Japan including remote rural areas by these companies as well as to conduct research relating to the telecommunications technologies that will form the foundation for telecommunications. On 1 July 2019, NTT Corporation launched NTT Ltd., an $11 billion de facto holding company business consisting of 28 brands from across NTT Security, NTT Communications and Dimension Data.[9]
History
[edit]
Established as a state monopoly in August 1952 to take over the Japanese telecommunications system, Nippon Telegraph and Telephone Public Corporation (日本電信電話公社, Nippon Denshin Denwa Kōsha; shortened into Den-Den Kōsha (電電公社)) 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.[10][11]
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 (NTT East, NTT West, 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.[12]
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.[13]
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.).[14]
Corporate history timeline
[edit]- 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.[15]
Subsidiaries
[edit]NTT Group consists of the following major companies, divided into five segments. NTT East, NTT West, NTT Communications, NTT Docomo, and NTT Data are most major subsidiaries. NTT Data is listed on the stock markets. NTT Urban Development is a subsidiary involved in real estate.[16] NTT Communications' business outside of Japan became part of NTT Ltd. on 1 July 2019.[9]
Regional
[edit]
- Nippon Telegraph and Telephone East Corporation (NTT East)
- Nippon Telegraph and Telephone West Corporation (NTT West)
Long distance and international
[edit]Mobile
[edit]Data (system integration)
[edit]- Dimension Data (now part of NTT Ltd. except in the Middle East and Africa Region)[17]
- e-shelter[18]
- Gyron Internet Ltd
- NTT Data
- NTT Comware
- NTT Software
- NTT AT
- NTT IT
Information security
[edit]- NTT Security (now part of NTT Ltd. as of the 1st July 2019)
R&D laboratories
[edit]- Service Innovation Laboratory Group
- Information Network Laboratory Group
- Science and Core Technology Laboratory Group
- Network Innovation Laboratories (Yokoska)
- Microsystem Integration Laboratories (Atsugi)
- Photonics Laboratories (Atsugi)
- Communication Science Laboratories (Keihanna and Atsugi)
- Basic Research Laboratories (Atsugi)
- NTT Research, Inc. (East Palo Alto, California)[19][20]
- Physics & Informatics (PHI) Laboratory
- Cryptography and Information Security (CIS) Laboratory
- Medical and Health Informatics (MEI) Laboratory
In 2023, the World Intellectual Property Organization (WIPO)’s Annual PCT Review ranked Nippon Telegraph and Telephone's number of patent applications published under the PCT System as 10th in the world, with 1,760 patent applications being published during 2023.[21]
Sponsorship
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- Omiya Ardija and Roasso Kumamoto (Japanese football clubs formerly affiliated with NTT)
- Dandelion Racing, Super Formula team affiliated with NTT Docomo.
- Chip Ganassi Racing in the IndyCar Series (affiliated with NTT Data, drivers include Ryan Briscoe, Tony Kanaan, Scott Dixon, Ed Jones, and Felix Rosenqvist). In 2019, NTT also became title sponsor of the series.[22]
- NTT Pro Cycling, UCI WorldTeam cycling team based in South Africa.
See also
[edit]
References
[edit]- ^ NTT株式会社, NTT Kabushiki gaisha
- ^ 日本電信電話株式会社, Nippon Denshin Denwa Kabushiki gaisha
- ^ 日本電信電話公社, Nippon Denshin Denwa Kōsha; shortened to Den-Den Kōsha (電電公社)
- ^ 日本電信電話株式会社等に関する法律, Nippon Denshin Denwa kabushiki gaisha-tō ni kan-suru hōritsu; Law No. 85 of December 25, 1984
- ^ a b c d e f "NTT Group Website". Nippon Telegraph and Telephone Corporation. Retrieved 6 May 2020.
- ^ "The Japanese Government Asset System and Current Conditions" (PDF). Ministry of Finance Japan. March 2019. Archived from the original (PDF) on 5 April 2018. Retrieved 27 May 2019.
- ^ "Fortune Global 500 – The largest companies in the world by revenue". Retrieved 16 January 2025.
- ^ "Largest Japanese companies by market capitalization". Retrieved 3 June 2022.
- ^ "The Global 2000 2023". Forbes. Archived from the original on 29 January 2024. Retrieved 7 February 2024.
- ^ "NTTが「世界一」の企業に！ 投資初心者も株に殺到…歴史的暴落の末路". Retrieved 5 January 2025.
- ^ "ダイナミックに変化する現実の経済と社会に触れる". 関西学院大学 (in Japanese). Retrieved 9 May 2025.
- ^ a b "English translation of the "Law Concerning Nippon Telegraph and Telephone Corporation, Etc."" (PDF). Archived from the original (PDF) on 28 February 2004.
- ^ a b Duckett, Chris. "Dimension Data, NTT Communication, and NTT Security bundled into NTT Ltd". ZDNet. Retrieved 10 July 2019.
- ^ Vartan, Vartanig G. (9 November 1987). "Market Place; Big Stock Sale By Japanese". The New York Times.
- ^ "U.S. set to make $8 billion from bailing out Citi". 27 March 2010. Archived from the original on 29 March 2010.
- ^ "NTT buys South Africa's Dimension Data". BBC News. 14 July 2010. Retrieved 14 July 2010.
- ^ Sean Buckley, Fierce Telecom. "NTT's Japan to U.S. network route reaches 500 Gbps mark." Aug 3, 2011. Retrieved Aug 4, 2011.
- ^ "Japan's NTT to issue green bonds worth about $2.7 billion". ETTelecom. Archived from the original on 22 March 2023. Retrieved 26 February 2024.
- ^ "Renewal of NTT Group's Corporate Identity | Press Release | NTT". group.ntt. Retrieved 22 June 2025.
- ^ Melby, Caleb (13 March 2018). "Kushner Conflict Cloud Hovers Over Brooklyn Sale Linked to Japan". Bloomberg News.
A spokesman for the subsidiary, NTT Urban Development, said the company knew the deal involved Kushner Cos. The subsidiary describes itself as the real estate arm of NTT.
- ^ "Dimension Data is now NTT Inc - TechCentral". techcentral.co.za. July 2019. Retrieved 10 July 2019.
- ^ "Press Releases June 23, 2015: NTT Communications Acquires 86.7% Stake in e-shelter, Germany's top data-center operator | docomo business | NTT Communications About Us". www.ntt.com. 23 June 2015.
- ^ "World-Class Research Center Opens in Palo Alto". Bloomberg.com. 8 July 2019. Retrieved 20 November 2019.
- ^ "World-Class Research Center Opens in Palo Alto". www.businesswire.com. 8 July 2019. Retrieved 20 November 2019.
- ^ "PCT Yearly Review 2024" (PDF). p. 39.
- ^ "IndyCar Names NTT as IndyCar Series Title Sponsor, Official Technology Partner". Sports Video Group. 18 January 2019. Retrieved 19 January 2019.
External links
[edit]- Official website
- NTT Research Inc.
- NTT Innovation Institute, Inc. Archived 2025-08-14 at the Wayback Machine
- NTT Disruption Archived 2025-08-14 at the Wayback Machine
- NTT Group
| Main Companies |  | |
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