- 1992
- NTT FACILITIES,INC. established
- 1985
- NTT established as a private company
- 1952
- The transition of the public-sevice corporation.
that combined both private-sector and government strengths.into the Nippon Telegraph and Telephone Public Corporation. - 1949
- The Communications Ministry was divided into two separate entities, creating the Minstry of Telecommunications and the Ministry of Posts.