68.89.86.167.in-addr.arpa.
Question and response
Question
dig mail.transpackgroup.com. PTR
Answer
mail.transpackgroup.com. 300 PTR 68.89.86.167.in-addr.arpa.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0