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The historic Phone Company of Japan is NTT.
NTT is an acronym for Nippon Telegraph and Telephone Corporation,
in Japanese Nippon Denshin Denwa Kabushiki-gaisha.

NTT was founded in 1952 (as a State owned monopoly)
1985 the company went public
1987 NTT was listed on the Tokyo Stock Exchange
As of 2019 NTT was the World's 3rd largest telephone company.

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