ns9.grupow.com.br.
Question and response
Question
dig 252.0-255.92.250.186.in-addr.arpa. PTR
Answer
252.0-255.92.250.186.in-addr.arpa. 5 PTR ns9.grupow.com.br.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0