mail01.sac-it.dk.
Question and response
Question
dig 141.128-159.255.235.85.in-addr.arpa. PTR
Answer
141.128-159.255.235.85.in-addr.arpa. 3600 PTR mail01.sac-it.dk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0