| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | | 01/01/1986 |
| Aruba | Extension | | 01/01/1986 |
| AUSTRALIA | Signature | 19/06/1962 | |
| AUSTRALIA | Ratification | 01/11/1962 | 01/05/1964 |
| AUSTRIA | Accession | 21/12/1965 | 21/03/1966 |
| BAHAMAS | Extension | | 13/06/1967 |
| Bahamas | Extension | 15/03/1967 | 13/06/1967 |
| BAHAMAS | Succession | 15/05/1975 | 10/07/1973 |
| BELGIUM | Signature | 28/11/1961 | |
| BELGIUM | Ratification | 06/05/1969 | 04/08/1969 |
| Bermuda | Extension | 15/03/1967 | 13/06/1967 |
| BRAZIL | Signature | 18/09/1961 | |
| British Antarctic Territory | Extension | 15/03/1967 | 13/06/1967 |
| British Honduras | Extension | 15/03/1967 | 13/06/1967 |
| British Solomon Islands | Extension | 15/03/1967 | 13/06/1967 |
| British Virgin Islands | Extension | 15/03/1967 | 13/06/1967 |
| BURKINA FASO | Accession | 02/07/1992 | 30/09/1992 |
| BYELORUSSIA S S R | Signature | 18/09/1961 | |
| BYELORUSSIA S S R | Ratification | 17/10/1983 | 14/01/1984 |
| CANADA | Accession | 01/09/1999 | 30/11/1999 |
| Cayman Islands | Extension | 15/03/1967 | 13/06/1967 |
| CHAD | Accession | 09/03/1971 | 07/06/1971 |
| Channel Islands | Extension | 15/03/1967 | 13/06/1967 |
| COLOMBIA | Accession | 02/05/1966 | 31/07/1966 |
| Cook Islands | Extension | 19/05/1969 | 17/08/1969 |
| CROATIA | Succession | 07/10/1993 | 08/10/1991 |
| CUBA | Signature | 29/01/1963 | |
| CYPRUS | Accession | 31/08/1970 | 29/11/1970 |
| CZECHOSLOVAKIA | Signature | 18/09/1961 | |
| CZECHOSLOVAKIA | Ratification | 27/07/1967 | 25/10/1967 |
| DENMARK | Accession | 20/01/1967 | 20/04/1967 |
| EL SALVADOR | Accession | 11/01/1980 | 10/04/1980 |
| ESTONIA | Accession | 21/04/1998 | |
| Falkland Islands | Extension | 15/03/1967 | 13/06/1967 |
| FIJI | Extension | | 13/06/1967 |
| Fiji | Extension | 15/03/1967 | 13/06/1967 |
| FIJI | Succession | 18/01/1972 | 10/10/1970 |
| FINLAND | Accession | 26/05/1977 | 23/08/1977 |
| FRANCE | Signature | 18/09/1961 | |
| FRANCE | Ratification | 24/01/1964 | 01/05/1964 |
| GABON | Accession | 18/02/1971 | 19/05/1971 |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 19/08/1975 | 16/11/1975 |
| GERMANY FEDERAL REPUBLIC | Signature | 18/09/1961 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 02/03/1964 | 31/05/1964 |
| GHANA | Accession | 21/07/1997 | 09/10/1997 |
| Gibraltar | Extension | 16/03/1967 | 13/06/1967 |
| Gilbert And Ellice Islands | Extension | 15/03/1967 | 13/06/1967 |
| GREECE | Accession | 19/09/1973 | 17/12/1973 |
| GRENADA | Accession | 29/08/1985 | 27/11/1985 |
| GUATEMALA | Signature | 18/09/1961 | |
| GUATEMALA | Ratification | 24/06/1971 | 22/09/1971 |
| GUINEA | Accession | 13/11/1998 | 11/02/1999 |
| HOLY SEE | Signature | 18/09/1961 | |
| HONDURAS | Signature | 18/09/1961 | |
| Hong Kong | Extension | 15/03/1967 | 13/06/1967 |
| HUNGARY | Signature | 18/09/1961 | |
| HUNGARY | Ratification | 23/11/1964 | 21/02/1965 |
| INDONESIA | Signature | 06/07/1962 | |
| IRAN | Accession | 17/07/1975 | 14/10/1975 |
| IRAQ | Accession | 27/07/1972 | 25/10/1972 |
| IRELAND | Accession | 19/01/1966 | 19/04/1966 |
| Isle of Man | Extension | 15/03/1967 | 13/06/1967 |
| ISRAEL | Accession | 27/11/1980 | 25/02/1981 |
| ITALY | Accession | 15/05/1968 | 13/08/1968 |
| JAMAICA | Accession | 03/10/1964 | 01/01/1965 |
| Kingdom In Europe | Extension | | 01/01/1986 |
| KUWAIT | Accession | 18/08/1975 | 16/11/1975 |
| Land Berlin | Extension | 02/03/1964 | |
| LEBANON | Accession | 21/02/1967 | 22/05/1967 |
| LESOTHO | Accession | 20/10/1975 | 18/01/1976 |
| LIBYA | Accession | 22/05/1969 | 20/08/1969 |
| LITHUANIA | Ratification | 09/12/1996 | 09/03/1997 |
| LUXEMBOURG | Accession | 23/08/1968 | 21/11/1968 |
| MACEDONIA THE FYR OF | Succession | 08/10/1997 | 17/11/1991 |
| MALAWI | Accession | 28/10/1977 | 25/01/1978 |
| MALAYSIA | Accession | 17/01/2008 | 15/04/2008 |
| MALI | Accession | 02/02/1999 | 03/05/1999 |
| MAURITANIA | Accession | 29/03/1979 | 27/06/1979 |
| MAURITIUS | Extension | | 13/06/1967 |
| Mauritius | Extension | 15/03/1967 | 13/06/1967 |
| MEXICO | Signature | 18/09/1961 | |
| MEXICO | Ratification | 16/05/1962 | 01/05/1964 |
| MOLDOVA REPUBLIC OF | Accession | 26/05/1997 | 24/08/1997 |
| Montserrat | Extension | 15/03/1967 | 13/06/1967 |
| MOROCCO | Accession | 07/11/1975 | 05/02/1976 |
| NETHERLANDS THE | Signature | 18/09/1961 | |
| NETHERLANDS THE | Ratification | 25/02/1964 | 25/05/1964 |
| NEW ZEALAND | Accession | 19/05/1969 | 17/08/1969 |
| NIGER | Accession | 14/07/1964 | 12/10/1964 |
| NIGERIA | Accession | 16/07/1969 | 14/10/1969 |
| Niue Island | Extension | 19/05/1969 | 17/08/1969 |
| NORWAY | Signature | 15/02/1962 | |
| NORWAY | Ratification | 20/01/1967 | 20/04/1967 |
| PAKISTAN | Accession | 21/07/1965 | 19/10/1965 |
| PAPUA NEW GUINEA | Accession | 03/12/1975 | 02/03/1976 |
| PARAGUAY | Accession | 02/10/1969 | 31/12/1969 |
| PHILIPPINES | Signature | 18/09/1961 | |
| PHILIPPINES | Ratification | 05/04/1966 | 04/07/1966 |
| POLAND | Signature | 25/10/1961 | |
| POLAND | Ratification | 16/12/1964 | 16/03/1965 |
| ROMANIA | Accession | 21/04/1965 | 20/07/1965 |
| RWANDA | Accession | 11/06/1971 | 09/09/1971 |
| SAUDI ARABIA | Accession | 18/05/1973 | 16/08/1973 |
| SEYCHELLES | Extension | | 13/06/1967 |
| Seychelles | Extension | 15/03/1967 | 13/06/1967 |
| SEYCHELLES | Accession | 19/06/1980 | 17/09/1980 |
| SLOVAK REPUBLIC | Succession | 11/07/1994 | 01/01/1993 |
| SLOVENIA | Succession | 19/08/1998 | 25/06/1991 |
| SOLOMON ISLANDS | Succession | 17/09/1981 | 07/07/1978 |
| SOUTH AFRICA | Accession | 04/01/1974 | 04/04/1974 |
| Southern Rhodesia | Extension | | 10/03/1965 |
| Sovereign Base Areas | Extension | 15/03/1967 | 13/06/1967 |
| SOVIET UNION | Signature | 18/09/1961 | |
| SOVIET UNION | Ratification | 22/09/1983 | 20/12/1983 |
| SOVIET UNION | Objection | 22/09/1983 | |
| St Helena And Ascension | Extension | 15/03/1967 | 13/06/1967 |
| SWAZILAND | Accession | 12/07/1971 | 10/10/1971 |
| SWEDEN | Signature | 18/09/1961 | |
| SWEDEN | Ratification | 20/01/1967 | 20/04/1967 |
| SWITZERLAND | Signature | 18/09/1961 | |
| SWITZERLAND | Ratification | 01/02/1964 | 01/05/1964 |
| TAIWAN | Signature | 18/09/1961 | |
| TOGO | Accession | 27/06/1980 | 25/09/1980 |
| Tokelau Islands | Extension | 19/05/1969 | 17/08/1969 |
| TUNISIA | Accession | 06/05/1970 | 04/08/1970 |
| Turks And Caicos Islands | Extension | 15/03/1967 | 13/06/1967 |
| UKRAINE S S R | Signature | 18/09/1961 | |
| UKRAINE S S R | Ratification | 17/10/1983 | 14/01/1984 |
| UKRAINE S S R | Statement | 17/10/1983 | |
| UNITED ARAB REPUBLIC | Accession | 04/05/1964 | 02/10/1964 |
| UNITED KINGDOM | Signature | 18/09/1961 | |
| UNITED KINGDOM | Ratification | 04/09/1962 | 01/05/1964 |
| VENEZUELA | Signature | 05/06/1962 | |
| YUGOSLAVIA | Accession | 24/03/1977 | 21/06/1977 |
| ZAMBIA | Accession | 01/03/1971 | 30/05/1971 |
| ZIMBABWE | Succession | 27/04/1982 | 18/04/1980 |