7.comuniquese2.com.br.
Question and response
Question
dig 71.64-79.218.36.138.in-addr.arpa. PTR
Answer
71.64-79.218.36.138.in-addr.arpa. 300 PTR 7.comuniquese2.com.br.
Authority
64-79.218.36.138.in-addr.arpa. 172800 NS ns-1234.awsdns-26.org.
64-79.218.36.138.in-addr.arpa. 172800 NS ns-1701.awsdns-20.co.uk.
64-79.218.36.138.in-addr.arpa. 172800 NS ns-317.awsdns-39.com.
64-79.218.36.138.in-addr.arpa. 172800 NS ns-705.awsdns-24.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0