go
ns2.cellcard.com.br has one IP number. ns2.cellcard.net, ns2.recargavirtual.com, ns2.rvtecnologia.com.br and ns2.recargavirtual.com.br point to the same IP. cellcard.net, cellcard.com.br, recargavirtual.com, rvtecnologia.com.br and recargavirtual.com.br use this as a nameserver. cellcard.com.br is a domain controlled by two nameservers at cellcard.com.br themselves. They are on different IP networks. Incoming mail for cellcard.com.br is handled by one mailserver also at cellcard.com.br. cellcard.com.br has one IP number , but the reverse is mattack.rvtecnologia.com.br. ns2.cellcard.com.br is hosted on a server in Brazil.

ns2.cellcard.com.br
a records
 
+ 200.251.172.22 200.251.0.0/16 AS4230  
+ ---  

cellcard.com.br
a records
 
+ 200.190.254.98 200.190.0.0/16 AS13353 mattack.rvtecnologia.com.br
+ --- mattack.rvtecnologia.com.br
ns-soa records
cellcard.com.br
+ 200.190.254.98 200.190.0.0/16 AS13353 mattack.rvtecnologia.com.br
+ --- mattack.rvtecnologia.com.br
ns records
cellcard.com.br
+ 200.190.254.98 200.190.0.0/16 AS13353 mattack.rvtecnologia.com.br
+ --- mattack.rvtecnologia.com.br
ns2.cellcard.com.br
+ 200.251.172.22 200.251.0.0/16 AS4230  
+ ---  
mx records
mail.cellcard.com.br
+ 200.190.254.98 200.190.0.0/16 AS13353 mattack.rvtecnologia.com.br
+ --- mattack.rvtecnologia.com.br
ip numbers of host
200.251.172.22
hostnames sharing ip with a-records
ns2.cellcard.net
ns2.recargavirtual.com
ns2.recargavirtual.com.br
ns2.rvtecnologia.com.br
domains using this as nameserver
cellcard.com.br
cellcard.net
recargavirtual.com
recargavirtual.com.br
rvtecnologia.com.br
domains using this as nameserver under another name
cellcard.net
recargavirtual.com
recargavirtual.com.br
rvtecnologia.com.br
used as nameserver but missing in zone
cellcard.net
recargavirtual.com
recargavirtual.com.br
rvtecnologia.com.br