go
mandar.dnsxeon.com has one IP number. dnsxeon.com is a domain controlled by two nameservers at dnsxeon.com themselves. They are on the same IP network. Incoming mail for dnsxeon.com is handled by one mailserver at com. dnsxeon.com has one IP number , but the reverse is mail.dnsxeon.com.

mandar.dnsxeon.com
a records
 
+ 180.235.149.247 180.235.149.0/24 AS45731  
+ ---  

dnsxeon.com
a records
 
+ 202.59.206.76 202.59.206.0/24 AS24197 mail.dnsxeon.com
+ --- mail.dnsxeon.com
ns-soa records
ns1.dnsxeon.com
+ 202.80.126.34 202.80.126.0/24 AS23699 mandar.dnsxeon.com
+ --- mandar.dnsxeon.com
ns records
ns1.dnsxeon.com
+ 202.80.126.34 202.80.126.0/24 AS23699 mandar.dnsxeon.com
+ --- mandar.dnsxeon.com
ns2.dnsxeon.com
+ 202.80.126.35 202.80.126.0/24 AS23699 ip35.126.ez.net.id
+ --- ip35.126.ez.net.id
mx records
dnsxeon.com
+ 202.59.206.76 202.59.206.0/24 AS24197 mail.dnsxeon.com
+ --- mail.dnsxeon.com
ip numbers of host
180.235.149.247
ip numbers using ptr to this host
202.80.126.34