ldap0.fmt1.pfcs.com.
Question and response
Question
dig 231.subnet224.13.220.66.in-addr.arpa. PTR
Answer
231.subnet224.13.220.66.in-addr.arpa. 86400 PTR ldap0.fmt1.pfcs.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0