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Domain Name System Security Extensions
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Application Layer — DNS
Protocol Overview
Full Name
Domain Name System Security Extensions
Abbreviation
DNSSEC
OSI Layer
Application Layer
Category
DNS
Default Port
53
RFC
RFC 4033
About DNSSEC
Extensions to DNS that provide authentication of DNS data, verified denial of existence, and data integrity through digital signatures.
Application Layer
DNS
Port 53
Standards Reference
DNSSEC is defined in RFC 4033, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.