AAAA may refer to:

Internet and computing

• AAAA protocol, within computer security, "authentication, authorization, accounting and auditing" - the AAA protocol combined with auditing.
• AAAA record, also known as "IPv6 address record", maps a hostname to a 128-bit IPv6 address in the Domain Name System (DNS).
• Internet Authentication Service, as an acronym for the four main services provided: Authentication, Authorization, Accounting, and Auditing.

Other uses

• AAAA battery, a 1.5 volt battery, smaller than the AAA size.
• Associated Actors and Artistes of America, an association of the performer trade unions Actors' Equity, AFTRA, Agma, and Agva.
• American Association of Advertising Agencies.
• The morse code for aerial attacker, used in conjunction with SOS.

See also

• AAA (disambiguation)
• AA (disambiguation)
• A (disambiguation)

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