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.

ICANN Acronyms and Terms

Type in the acronym or term you are looking for in the Search bar below.
In addition to English, translated versions of acronyms and terms are also available in Arabic, Chinese, French, Russian, and Spanish. Links for each language are located in the top right of the page.
Click the first letter of the term you are looking for to search alphabetically.


  • Domain Name System response modification attack(DNS response modification attack)

    An attack on the DNS in which the operator of a name server manipulates response messages to queries for nonexistent domain names. Instead of delivering the response message to the Internet user, the name server delivers a synthesized message that contains an Internet Protocol (IP) address selected by the operator.

    Operators that manipulate DNS response messages in this way often redirect users to sites that provide a search engine or sites that display pay-per-click advertising.