mailgw.oneoffice.jp.
Question and response
Question
dig 5.0.82.7.211.in-addr.arpa. PTR
Answer
5.0.82.7.211.in-addr.arpa. 86400 PTR mailgw.oneoffice.jp.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0