As the group corporation, it consists of following companies:
External Links Homepage - http://www.ntt.co.jp/index_e
See also: Telephone, Telegraph
... 2nd century - 3rd century - 4th century Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 - 243 244 245 246 ...