go
this hostname cnames to www.credicard.com.br. credicardcitinovo.com.br is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network.

credicardcitinovo.com.br
ns-soa records
 
+   AS?  
+ ---  
ns records
nmxjar-edns01.credicard.com.br
+ 192.193.204.74 192.193.204.0/24 AS30284 nmxjar-edns01.banamex.com
+ --- nmxjar-edns01.banamex.com
nmxmty-edns01.credicard.com.br
+ 192.193.207.41 192.193.207.0/24 AS30285 nmxmty-edns01.banamex.com
+ --- nmxmty-edns01.banamex.com
nmxjar-edns01.banamex.com
+ 192.193.204.74 192.193.204.0/24 AS30284 -
+ --- -
nmxmty-edns01.banamex.com
+ 192.193.207.41 192.193.207.0/24 AS30285 -
cname
www.credicard.com.br
nameservers missing in parent delegation
nmxjar-edns01.credicard.com.br
nmxmty-edns01.credicard.com.br
nameservers missing in zone
nmxjar-edns01.banamex.com
nmxmty-edns01.banamex.com