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DNS Certification Authority Authorization information


DNS Certification Authority Authorization
AbbreviationCAA
StatusProposed Standard
First publishedOctober 18, 2010 (2010-10-18)
Latest versionRFC 8659
November 2019
OrganizationIETF
Authors
  • Phillip Hallam-Baker
  • Rob Stradling
  • Jacob Hoffman-Andrews

DNS Certification Authority Authorization (CAA) is an Internet security policy mechanism that allows domain name holders to indicate to certificate authorities whether they are authorized to issue digital certificates for a particular domain name. It does this by means of a "CAA" Domain Name System (DNS) resource record.

It was drafted by computer scientists Phillip Hallam-Baker and Rob Stradling in response to increasing concerns about the security of publicly trusted certificate authorities. It is an Internet Engineering Task Force (IETF) proposed standard.

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