Signature (SIG) Cryptographic signature (SIG) record. Authenticates a resource record set of a particular type, class, and ...

Signature (SIG) Cryptographic signature (SIG) record. Authenticates a resource record set of a particular type, class, and name and binds it to a time interval and the signer's DNS domain name. This authentication and binding is done using cryptographic techniques and the signer's private key. The signer is frequently the owner of the zone from which the resource record originated.