NTT
Japanese telecom giant; NTT Global Data Centers is a top-five operator.
- Ticker
- TSE: 9432
- Headquarters
- Ōtemachi
- Founded
- 1985
- Market position
- major
- Value-chain segment
- Data Center Operators (Colo)
About NTT
NTT, Inc., 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.