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smx.abv.bg, pmx.abv.bg and mx10.abv.bg point to 194.153.145.69.

mx10.abv.bg
a records
 
+ 194.153.145.69 194.153.145.0/24 AS13147 -
+ --- -

pmx.abv.bg
a records
 
+ 194.153.145.69 194.153.145.0/24 AS13147 mx10.abv.bg
+ --- mx10.abv.bg

smx.abv.bg
a records
 
+ 194.153.145.69 194.153.145.0/24 AS13147 mx10.abv.bg
+ --- mx10.abv.bg
ip numbers of host
194.153.145.69
ptrs of ip numbers
mx10.abv.bg
hostnames sharing ip with a-records
mx10.abv.bg
pmx.abv.bg
smx.abv.bg
domains using this as mailserver
abv.bg
gbg.bg
gyuvetch.bg