NTT owns 66.7% of the separately listed NTT DoCoMo, the largest wireless operator in Japan, with 80.3 million subscribers. This stake accounts for about 70% of NTT's valuation. It also owns NTT East and NTT West, the two regional incumbent fixed-line operators in Japan, with about 15 million traditional fixed-line and 22 million broadband lines (around 56% of which are wholesaled). The firm also provides IT and communications systems integration via NTT Communications and 52.4%-owned NTT Data.
Tokyo, 100-8116, Japan