dig +edns=0 +noad +norec +cookie +nsid +expire +subnet=0.0.0.0/0 \ soa $zone @$server expect: status: NOERROR expect: the SOA record to be present in the answer section expect: an OPT record to be present in the additional section expect: EDNS Version 0 in response expect: flag: aa to be present expect: flag: ad to NOT be present