.int is a generic top-level domain “gTLD” used on the Internet’s Domain Name System.
According to current IANA policy, the .int “gTLD””:/glossary-of-printing-terms/gtld is reserved for international treaty organizations, and non-governmental organizations with “observer” status at the United Nations.
Additionally, .int was historically also used for “Internet infrastructure databases”.
The contents of .arpa had been slated to be moved into .int, but in 2000 the IAB recommended that no new infrastructure databases be added to .int and that .arpa retain its current use.
Its last remaining role was for reverse translation of IPv6 addresses under the .ip6.int zone.
This zone was officially turned off on 6 June 2006 in favour of .ip6.arpa, also administered by IANA.
The .eu.int sub-domain was used by the European Union-affiliated institutions. However, the aforementioned institutions’ domain names changed to the TLD .eu on May 9, 2006 (Europe Day).
The institutions’ previous “.eu.int” addresses will continue to be accessible for a transitional period of at least one year.