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ns.image.ru has one IP number , but the reverse is mx.image.ru. mx.image.ru and mail.mapitan.ru point to the same IP. image.ru use this as a nameserver. image.ru is a domain controlled by two nameservers on different IP networks. Incoming mail for image.ru is handled by one mailserver at image.ru themselves. image.ru has one IP number. ns.image.ru is hosted on a server in Russian Federation.

ns.image.ru
a records
 
+ 89.249.20.75 89.249.16.0/20 AS16083 mx.image.ru
+ --- mx.image.ru

image.ru
a records
 
+ 62.5.145.114 62.5.128.0/17 AS8359  
+ ---  
ns-soa records
ns.image.ru
+ 89.249.20.75 89.249.16.0/20 AS16083 mx.image.ru
+ --- mx.image.ru
ns records
ns.image.ru
+ 89.249.20.75 89.249.16.0/20 AS16083 mx.image.ru
+ --- mx.image.ru
ns4.nic.ru
+ 194.226.96.8 194.226.96.0/24 AS5568 ns4.ripn.net
+ --- ns4.ripn.net
mx records
mx.image.ru
+ 89.249.20.75 89.249.16.0/20 AS16083 -
+ --- -
ip numbers of host
89.249.20.75
ptrs of ip numbers
mx.image.ru
hostnames sharing ip with a-records
mail.mapitan.ru
mx.image.ru
domains using this as nameserver
image.ru
domains using this as mailserver under another name
image.ru
mapitan.ru