Publication Sales

Voice: +41 22 730 6141
Email: sales@itu.int
 

Membership Affairs

Fax: +41 22 730 6675 
Email: memberstates@itu.int for Member States
Email: membership@itu.int for Sector Members, Associates & Academia ​ 

Library and Archives

Voice: +41 22 730 6900
Email: library-archives@itu.int​

Information Services

Voice: +41 22 730 5554 (Administration) +41 22 730 6666 (Service Desk)
​Email: ServiceDesk@itu.int  (TIES Inquiries) webmaster@itu.int  (Web Technical Questions) hostmaster@itu.int  (DNS Questions)

​UN and Liaison Office

ITU is a specialized agency of the United Nations and maintains a liaison office with the UN in New York. Office DC2-2524, 2 United Nations Plaza - New York, NY, 10017
E-mail: wynhoven@un.org, ursula.wynhoven@itu.int
Tel.:  +1 917 214 5584​