Question and response
Question
dig primary.spamfilterserver.com. AAAA
Answer
primary.spamfilterserver.com. 300 AAAA 2a02:cc8:0:0:0:0:99:28
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0