Embassy of Switzerland in Hanoi Address : Hanoi Central Office Building, 15th Floor, 44B Ly Thuong Kiet Street, Hanoi City, Vietnam. Phone : (024) 3934 6589 | in Hanoi : 3934 6589 | outside Hanoi : 024 3934 6589 | outside Vietnam : 0084 24 3934 6589 Fax (024) 3934 6591 Email : Embassy hanoi@eda.