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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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  • resolver

    A Domain Name System (DNS) server that resolves host names on behalf of Internet users and applications (clients). Distributed throughout the Internet, a resolver performs iterative queries, starting at the root zone, to obtain the Internet Protocol (IP) address of a host computer requested by a client. Resolvers typically cache their query results so they can quickly retrieve the IP addresses for host names they have already resolved.