Dich Vu Vien Thong Ngoi Sao Viet Nam Joint Stock Company Address: Zoom 1096, 10th Floor, Van Nam Building, No 26, Lang Street, Nga Tu So Ward, Dong Da District, Ha Noi City Enterprise code: 0106895840 Phone: 02466854555 Representative: Dang Tran Tuan Adress: No 79, Hue Street, Ngo Thi Nham Ward, Hai Ba Trung District, Ha Noi City Khuong Dinh Ward, Thanh Xuan District, Ha Noi CityFounding date: 7 - 7 - 2015