go
c.nic.lv has one IP number , which also has a corresponding reverse pointer. ns24.communitydns.net point to the same IP. lv use this as a nameserver. Incoming mail for nic.lv is handled by two mailservers at latnet.lv. They are on the same IP network. nic.lv has one IP number. c.nic.lv is hosted on a server in United Kingdom even though the hostname implies Latvia.

c.nic.lv
a records
 
+ 194.0.1.24 194.0.1.0/24 AS42909 -
+ --- -

nic.lv
a records
 
+ 91.198.156.33 91.198.156.0/24 AS5538  
+ ---  
mx records
mx.latnet.lv
+ 92.240.66.33 92.240.64.0/19 AS5538 -
+ --- -
mx2.latnet.lv
+ 92.240.66.34 92.240.64.0/19 AS5538 -
ip numbers of host
194.0.1.24
ptrs of ip numbers
c.nic.lv
ip numbers using ptr to this host
194.0.1.24
hostnames sharing ip with a-records
ns24.communitydns.net
domains using this as nameserver
lv