go
email.ns2.ccd.com.br are subdomains to this hostname. ccd.com.br is a domain controlled by two nameservers at sitepci.com.br. They are on different IP networks. Incoming mail for ccd.com.br is handled by one mailserver at ccd.com.br themselves. ccd.com.br has one IP number.

ccd.com.br
a records
 
+ 74.53.142.234 74.52.0.0/14 AS21844  
+ ---  
ns-soa records
ns1.sitepci.com.br
+ 67.15.179.23 67.15.0.0/16 AS21844 -
+ --- -
ns records
ns1.sitepci.com.br
+ 67.15.179.23 67.15.0.0/16 AS21844 -
+ --- -
ns2.sitepci.com.br
+ 74.53.142.235 74.52.0.0/14 AS21844 eb.8e.354a.static.theplanet.com
+ --- eb.8e.354a.static.theplanet.com
mx records
email.ccd.com.br
+   AS?  
+ ---  
subdomains
*.ns2.ccd.com.br
email.ns2.ccd.com.br