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Nippon Telegraph and Telephone
Japanese telecommunication company
Japanese telecommunication company
| Field | Value | |
|---|---|---|
| name | NTT, Inc. | |
| native_name | NTT株式会社 | |
| romanized_name | NTT kabushiki gaisha | |
| former_name | Nippon Telegraph and Telephone Corporation (1985–2025) | |
| type | Public | |
| traded_as | {{Plainlist | |
| image | Otemachi 1st Square.jpg | |
| image_caption | Headquarters at Otemachi 1st Square in Ōtemachi, Chiyoda, Tokyo | |
| foundation | ||
| founder | Government of Japan | |
| parent | ||
| predecessor | ||
| location | Ōtemachi, Chiyoda, Tokyo, Japan | |
| key_people | ||
| industry | Telecommunications | |
| revenue | (2025) | |
| operating_income | (2025) | |
| net_income | (2025) | |
| assets | (2025) | |
| equity | (2025) | |
| num_employees | 341,321 (31 March 2025) | |
| owner | Minister of Finance (34.25%) | |
| subsid | {{plainlist | |
| homepage | ||
- Nikkei 225 component (9432)
- TOPIX Core30 component (9432)
- NTT Docomo
- NTT Docomo Business
- NTT Docomo Solutions
- NTT Data
(formerly known as ) is a Japanese telecommunications holding company headquartered in Tokyo, Japan. Ranked 128th in Fortune Global 500, NTT is the sixth-largest telecommunications company in the world in terms of revenue, as well as the 17th largest publicly traded company in Japan by market capitalization, and the 6th largest by revenue, as of January 2026. In 2025, the company was ranked 79th in the Forbes Global 2000. 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 cap until the burst of the Dot-com bubble in the early 2000s.
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 . 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. 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 ().
The company is incorporated pursuant to the NTT Law. The purpose of the company defined by the law is to own all the shares issued by and 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 foundational research in telecommunications, developing the core technologies that will underpin the future of global connectivity. 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.
Since its privatization in 1985, the abbreviation "NTT" has become synonymous with the brand name. Following amendments to the NTT Law permitting a change in its official trade name, the company was renamed Nippon Telegraph and Telephone Corporation to NTT, Inc., effective 1 July 2025.
History
Established as a state monopoly in August 1952 to take over the Japanese telecommunications system, Nippon Telegraph and Telephone Public Corporation 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
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. NTT Communications' business outside of Japan became part of NTT Ltd. on 1 July 2019.
Regional
- Nippon Telegraph and Telephone East Corporation (NTT East)
- Nippon Telegraph and Telephone West Corporation (NTT West)
Long distance and international
- NTT Communications
- NTT MSC
- Verio Inc
- NTT America
- NTT Europe
- HKNet
- Plala Networks
Mobile
- NTT Docomo
Data (system integration)
- Dimension Data (now part of NTT Ltd. except in the Middle East and Africa Region)
- e-shelter
- Gyron Internet Ltd
- NTT Data
- NTT Comware
- NTT Software
- NTT AT
- NTT IT
Information security
- NTT Security (now part of NTT Ltd. as of 1 July 2019)
R&D laboratories
- Service Innovation Laboratory Group
- Service Evolution Laboratories (Yokosuka)
- Media Intelligence Laboratories (Yokosuka)
- Software Innovation Center (Musashino and Shibaura)
- Secure Platform Laboratories (Musashino)
- Information Network Laboratory Group
- Network Technology Laboratories (Musashino)
- Network Service Systems Laboratories (Musashino)
- Access Network Service Systems Laboratories (Tsukuba and Yokoska)
- Energy and Environment Systems Laboratories (Atsugi)
- 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)
- 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.
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.
- NTT Pro Cycling, UCI WorldTeam cycling team based in South Africa
- Naoya Inoue professional boxer affiliated with NTT Docomo.
References
References
- (2025-06-20). "Annual Securities Report (For the fiscal year ended March 31, 2025)". Nippon Telegraph and Telephone Corporation.
- (March 2019). "The Japanese Government Asset System and Current Conditions". [[Ministry of Finance (Japan).
- "Fortune Global 500 – The largest companies in the world by revenue".
- "Largest Japanese companies by market capitalization".
- "The Global 2000 2023".
- "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".
- "ダイナミックに変化する現実の経済と社会に触れる".
- "English translation of the "Law Concerning Nippon Telegraph and Telephone Corporation, Etc."".
- Duckett, Chris. "Dimension Data, NTT Communication, and NTT Security bundled into NTT Ltd".
- Vartan, Vartanig G.. (9 November 1987). "Market Place; Big Stock Sale By Japanese". The New York Times.
- (27 March 2010). "U.S. set to make $8 billion from bailing out Citi".
- (14 July 2010). "NTT buys South Africa's Dimension Data". BBC News.
- Sean Buckley, Fierce Telecom. "[http://www.fiercetelecom.com/story/ntts-japan-us-network-route-reaches-500-gbps-mark/2011-08-03 NTT's Japan to U.S. network route reaches 500 Gbps mark]." 3 Aug 2011. Retrieved 4 Aug 2011.
- "Japan's NTT to issue green bonds worth about $2.7 billion".
- "Renewal of NTT Group's Corporate Identity {{!}} Press Release {{!}} NTT".
- Melby, Caleb. (13 March 2018). "Kushner Conflict Cloud Hovers Over Brooklyn Sale Linked to Japan". [[Bloomberg News]].
- (July 2019). "Dimension Data is now NTT Inc - TechCentral".
- (23 June 2015). "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".
- (2019-07-08). "World-Class Research Center Opens in Palo Alto".
- (2019-07-08). "World-Class Research Center Opens in Palo Alto".
- "PCT Yearly Review 2024".
- (18 January 2019). "IndyCar Names NTT as IndyCar Series Title Sponsor, Official Technology Partner".
- (13 December 2022). "NTT Docomo becomes the main sponsor of Naoya Inoue".
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