The International Telecommunication Union (ITU) considers itself the world's oldest continually operating international organisation and dates its birth to the founding of the International Telegraph Convention in 1865.

The administrative headquarters is in Washington, DC and other Intelsat corporation offices are also located there.

ITSO is an intergovernmental organization with 149-member states, that incorporates the principle set forth in Resolution 1721 (XVI) of the General Assembly of the United Nations, which established that communication by means of satellite should be available to the nations of the world as soon as practicable on a ...

1964: International Treaty Establishes Intergovernmental Consortium. International Telecommunications Satellite Organization, or Intelsat, is created to own and manage a constellation of communications satellites providing international broadcast services.