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mail.aha.bg has one IP number , which also has a corresponding reverse pointer. aha.bg use this as a mailserver. aha.bg is a domain controlled by two nameservers at bgdns.net. They are on different IP networks. Incoming mail for aha.bg is handled by one mailserver at aha.bg themselves. aha.bg has one IP number. mail.aha.bg is hosted on a server in Bulgaria.

mail.aha.bg
a records
 
+ 85.14.4.124 85.14.4.0/24 AS8262 -
+ --- -

*.aha.bg
a records
 
+ 85.14.21.152 85.14.0.0/18 AS8262  
+ ---  

aha.bg
a records
 
+ 85.14.21.152 85.14.0.0/18 AS8262  
+ ---  
ns-soa records
redirns1.bgdns.net
+ 87.120.40.31 87.120.40.0/24 AS13147 redirect.host.bg
+ --- redirect.host.bg
ns records
redirns1.bgdns.net
+ 87.120.40.31 87.120.40.0/24 AS13147 redirect.host.bg
+ --- redirect.host.bg
redirns2.bgdns.net
+ 188.40.255.43 188.40.0.0/16 AS24940 cyclone.host.bg
+ --- cyclone.host.bg
mx records
mail.aha.bg
+ 85.14.4.124 85.14.4.0/24 AS8262 -
+ --- -
ip numbers of host
85.14.4.124
ptrs of ip numbers
mail.aha.bg
ip numbers using ptr to this host
85.14.4.124
domains using this as mailserver
aha.bg