ip7e000000.ipv4.syd02.ds.network.
Question and response
Question
dig mail-smtprelay02.ds.network.126.201.122.in-addr.arpa. PTR
Answer
mail-smtprelay02.ds.network.126.201.122.in-addr.arpa. 3600 PTR ip7e000000.ipv4.syd02.ds.network.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0