Question and response
Question
dig smtp-in.o2.cz. AAAA
Answer
smtp-in.o2.cz. 10800 AAAA 2a00:1028:d:2963:0:0:0:106
Authority
o2.cz. 10800 NS dns.iol.cz.
o2.cz. 10800 NS ns2.tel.cz.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0