mail.nexxera.com.
Question and response
Question
dig 1.0-63.123.247.200.in-addr.arpa. PTR
Answer
1.0-63.123.247.200.in-addr.arpa. 300 PTR mail.nexxera.com.
Authority
0-63.123.247.200.in-addr.arpa. 300 NS ns-406.awsdns-50.com.
0-63.123.247.200.in-addr.arpa. 300 NS ns-1855.awsdns-39.co.uk.
0-63.123.247.200.in-addr.arpa. 300 NS ns003.nexxera.com.br.
0-63.123.247.200.in-addr.arpa. 300 NS ns.embratel.net.br.
Additional
ns.embratel.net.br. 86400 A 200.255.253.241
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0