go
mx.panamericano.com.br point to 189.108.204.163.

mx.panamericano.com.br
a records
 
+ 189.108.204.163 189.108.0.0/16 AS10429 -
+ --- -
ip numbers of host
189.108.204.163
ptrs of ip numbers
mx.panamericano.com.br
hostnames sharing ip with a-records
mx.panamericano.com.br
domains using this as mailserver
panamericano.com.br