Home ABOUT ITSO Membership

Membership in ITSO, currently comprised of 149 member States, is open to new membership by the Government of any member State of the United Nations or the International Telecommunication Union (ITU). A Government may join the Organization by officially depositing its instrument of ratification, acceptance, approval or accession to the Agreement with the Depositary of the treaty. Any Government signing the Agreement may do so without its signature being subject to ratification, acceptance or approval or with a declaration accompanying its signature that it is subject to ratification, acceptance or approval.


For more information, contact:

Depositary of Agreement
U.S. Department of State
Office of Treaty Affairs
2201 C Street, NW
Washington, D.C. 20520, U.S.A.
Tel: +1 202 647-4000
Fax: +1 202 736-7541

International Telecommunications Satellite Organization (ITSO)
Office of Legal Affairs
Attn: Director of Legal Affairs
4400 Jenifer St. NW Suite 332
Washington, D.C. 20015, USA
Tel: +1 202 243-5040
Fax: +1 202 243-5018