DIG Information

Response Header Values

Flags:

  • AA = Authoritative Answer

  • TC = Truncation

  • RD = Recursion Desired (set in a query and copied into the response if recursion is supported)

  • RA = Recursion Available (if set, denotes recursive query support is available)

  • AD = Authenticated Data (for DNSSEC only; indicates that the data was authenticated)

  • CD = Checking Disabled (DNSSEC only; disables checking at the receiving server)

Response code:

  • 0 = NOERR, no error

  • 1 = FORMERR, format error (unable to understand the query)

  • 2 = SERVFAIL, name server problem

  • 3= NXDOMAIN, domain name does not exist

  • 4 = NOTIMPL, not implemented

  • 5 = REFUSED (e.g., refused zone transfer requests)