Question and response
Question
dig 18.121.in-addr.arpa. PTR
Answer
The response has no answer records.
Authority
18.121.IN-ADDR.ARPA. 86400 SOA dns3.hbidc.net. dns4.hbidc.net. 2007090505 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0