80251.smtp-out.domwest.net.
Question and response
Question
dig 1.0-27.81.158.51.in-addr.arpa. PTR
Answer
1.0-27.81.158.51.in-addr.arpa. 86400 PTR 80251.smtp-out.domwest.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0