fs219.xbit.jp.
Question and response
Question
dig 75.64-127.35.106.59.in-addr.arpa. PTR
Answer
75.64-127.35.106.59.in-addr.arpa. 5 PTR fs219.xbit.jp.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0