Question and response
Question
dig mail4.knockbot.info. AAAA
Answer
The response has no answer records.
Authority
knockbot.info. 300 SOA 01.dnsv.jp. hostmaster.dnsv.jp. 1752887637 3600 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0