International organisation

International Telecommunication Union

The oldest organisation in the UN system -- founded in 1865 for the telegraph -- and the registry through which states share spectrum, orbital slots and numbering.

Abbreviation
ITU
Founded
1865
Headquarters
Geneva
Member states
188 resolved, 193 published by the organisation
Official site
https://www.itu.int

The two counts differ. International Telecommunication Union publishes 193 members; 188 resolved against the 193 states this site has checked. Sometimes that is a disagreement about what counts as a member state — a non-UN state, a territory, a suspended member — and sometimes the compiled source lacks a current statement for a real one. Either way the gap is shown rather than smoothed over, because a table that quietly shows one number cannot be checked against the other.

The Holy See is an ITU member state without being a UN member, and does not appear in the table below.

Member states

Ordered by accession. A state with no recorded date is listed last rather than given one.

A joining date is the one the source records, which may be the day a treaty was signed or the day it took effect. States that joined together can therefore differ by months here.

StateJoinedListed by the source as
Austria 1866-01-01 —
Belgium 1866-01-01 —
France 1866-01-01 —
Germany 1866-01-01 —
Greece 1866-01-01 —
Hungary 1866-01-01 —
Italy 1866-01-01 —
Kingdom of Denmark 1866-01-01 Denmark
Kingdom of the Netherlands 1866-01-01 Netherlands
Norway 1866-01-01 —
Portugal 1866-01-01 —
Russia 1866-01-01 —
Spain 1866-01-01 —
Sweden 1866-01-01 —
Switzerland 1866-01-01 —
Turkey 1866-01-01 —
Romania 1866-02-09 —
Luxembourg 1866-03-02 —
India 1869-01-01 —
Iran 1869-01-01 —
United Kingdom 1871-02-24 —
Egypt 1876-12-09 —
Brazil 1877-07-04 —
Australia 1878-05-27 —
New Zealand 1878-06-03 —
Japan 1879-01-29 —
Bulgaria 1880-09-18 —
Thailand 1883-04-21 —
Argentina 1889-01-01 —
Sri Lanka 1897-01-01 —
Uruguay 1902-07-01 —
Iceland 1906-10-01 —
Bolivia 1907-06-01 —
Chile 1908-01-01 —
Canada 1908-07-01 —
Mexico 1908-07-01 —
Monaco 1908-07-01 —
United States 1908-07-01 —
South Africa 1910-01-01 —
Philippines 1912-05-25 —
Guatemala 1914-07-10 —
Panama 1914-07-14 —
Colombia 1914-08-25 —
Peru 1915-07-12 —
Cuba 1918-01-16 —
Ecuador 1920-04-17 —
Venezuela 1920-08-13 —
China 1920-09-01 People's Republic of China
Finland 1920-09-01 —
Poland 1921 —
Latvia 1921-12-11 —
Estonia 1922-05-19 —
Albania 1922-06-02 —
Lithuania 1923-07-01 —
Ireland 1923-12-08 —
Lebanon 1924-01-12 —
Syria 1924-01-12 —
Honduras 1925-10-27 —
Nicaragua 1926-05-12 —
Dominican Republic 1926-07-11 —
Paraguay 1927-09-27 —
Haiti 1927-10-10 —
Liberia 1927-10-10 —
El Salvador 1927-10-12 —
Afghanistan 1928-04-12 —
Iraq 1928-11-12 —
Yemen 1931-01-01 —
Ethiopia 1932-02-20 —
Costa Rica 1932-09-13 —
Myanmar 1937-09-15 —
Belarus 1947-05-07 —
Ukraine 1947-05-07 —
Jordan 1947-05-20 —
Pakistan 1947-08-26 —
Israel 1948-06-24 —
Indonesia 1949-01-01 —
Saudi Arabia 1949-02-07 —
Vietnam 1951-09-24 —
Cambodia 1952-04-10 —
Libya 1953-02-03 —
Morocco 1956-11-01 —
Tunisia 1956-12-14 —
Ghana 1957-05-17 —
Sudan 1957-10-23 —
Nepal 1957-12-05 —
Malaysia 1958-02-03 —
Guinea 1959-03-09 —
Kuwait 1959-08-14 —
Mali 1960-10-21 —
Niger 1960-11-14 —
Senegal 1960-11-15 —
Chad 1960-11-25 —
Central African Republic 1960-12-02 —
Cameroon 1960-12-22 —
Ivory Coast 1960-12-23 —
Gabon 1960-12-28 —
Benin 1961-01-01 —
Nigeria 1961-04-11 —
Cyprus 1961-04-24 —
Madagascar 1961-05-11 —
Togo 1961-09-14 —
Democratic Republic of the Congo 1961-12-06 —
Sierra Leone 1961-12-30 —
Burkina Faso 1962-01-16 —
Mauritania 1962-04-18 —
Somalia 1962-09-28 —
Tanzania 1962-10-31 —
Rwanda 1962-12-12 —
Burundi 1963-02-16 —
Jamaica 1963-02-18 —
Uganda 1963-03-08 —
Algeria 1963-05-03 —
Liechtenstein 1963-07-25 —
Kenya 1964-04-11 —
Mongolia 1964-08-27 —
Malta 1965-01-01 —
Malawi 1965-02-19 —
Trinidad and Tobago 1965-03-06 —
Zambia 1965-08-23 —
Singapore 1965-10-22 —
Maldives 1967-02-28 —
Guyana 1967-03-08 —
Lesotho 1967-05-26 —
Barbados 1967-08-16 —
Botswana 1968-04-02 —
Nauru 1969-06-10 —
Mauritius 1969-08-30 —
Equatorial Guinea 1970-07-02 —
Eswatini 1970-11-11 —
Fiji 1971-05-05 —
Tonga 1972-01-07 —
Oman 1972-04-28 —
United Arab Emirates 1972-06-27 —
Qatar 1973-03-27 —
Bangladesh 1973-09-05 —
The Gambia 1974-05-27 —
The Bahamas 1974-08-19 —
Bahrain 1975-01-01 —
North Korea 1975-09-24 —
Papua New Guinea 1975-10-31 —
Mozambique 1975-11-04 —
Guinea-Bissau 1976-01-15 —
Suriname 1976-07-15 —
São Tomé and Príncipe 1976-09-01 —
Cape Verde 1976-09-10 —
Angola 1976-10-13 —
San Marino 1977-03-25 —
Djibouti 1977-11-22 —
Zimbabwe 1981-02-10 —
Grenada 1981-11-17 —
Belize 1981-12-16 —
Saint Vincent and the Grenadines 1983-03-25 —
Namibia 1984-01-25 —
Brunei 1984-11-19 —
Kiribati 1986-11-03 —
Antigua and Barbuda 1987-02-04 —
Solomon Islands 1987-07-27 —
Vanuatu 1988-03-30 —
Bhutan 1988-09-15 —
Samoa 1988-10-07 —
Azerbaijan 1992-04-10 —
Croatia 1992-06-03 —
Slovenia 1992-06-16 —
Armenia 1992-06-30 —
Uzbekistan 1992-07-10 —
Bosnia and Herzegovina 1992-10-20 —
Moldova 1992-10-20 —
Czech Republic 1993-01-01 —
Georgia 1993-01-07 —
Kazakhstan 1993-02-23 —
Slovakia 1993-02-23 —
Federated States of Micronesia 1993-03-18 —
North Macedonia 1993-05-04 —
Turkmenistan 1993-05-07 —
Eritrea 1993-08-06 —
Andorra 1993-11-12 —
Kyrgyzstan 1994-01-20 —
Tajikistan 1994-04-28 —
Marshall Islands 1996-02-22 —
Tuvalu 1996-08-15 —
Dominica 1996-10-28 —
Saint Lucia 1997-09-04 —
Seychelles 1999-09-17 —
Serbia 2001-06-01 —
Saint Kitts and Nevis 2006-03-15 —
Montenegro 2006-06-21 —
Timor-Leste 2010-08-24 —
South Sudan 2011-10-03 —

Its digital estate, measured by us

1 zone of this organisation are in scope for our own passive observation — certificate transparency, DNS, and one ordinary request per host per cycle. This is first-party measurement: nobody else publishes it.

ZoneHosts seen
itu.int 535

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