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Domain Name System Security Extensions
Suite of IETF specifications
Domain Name System Security Extensions
The Domain Name System Security Extensions (DNSSEC) is a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System (DNS) in Internet Protocol (IP) networks. The protocol provides cryptographic authentication of data, authenticated denial of existence, and data integrity, but not availability or confidentiality. As of 2026, DNSSEC deployment is spotty.
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