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ICANN Acronyms and Terms

ICANN has hundreds of acronyms and terms, which can be confusing. We created this multilingual tool to help explain what these terms mean and facilitate your work within the ICANN community. Search for terms by name or acronym using the search bar, or search by letter. All acronyms and terms are available in Arabic, Chinese, French, Russian, and Spanish.

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  • Domain Name System resource exhaustion attackDNS resource exhaustion attack

    An attack in which the attacker continuously queries a name server with the intent of depleting a resource that is essential to the server’s operation. In one type of exhaustion attack, the attacker continuously opens connections on a name server, but does not complete the connection process for any of them. The incomplete connections eventually consume available memory on the name server, preventing it from opening any legitimate connections.