DNSSEC - DNS Record

(Domain Name System Security Extensions). The DNSSEC are a suite of IETF specifications for securing certain kinds of information provided by the Domain Name System (DNS) as used on Internet Protocol (IP) networks. It is a set of extensions to DNS which provide to DNS clients (resolvers): origin authentication of DNS data, Data integrity (but not availability or confidentiality) and Authenticated denial of existence.

The original design of the Domain Name System (DNS) did not include security, instead it was designed to be a scalable disributed system. The Domain Name System Security Extensions (DNSSEC) attempts to add security, while maintaining backwards compatibility.