Robtex

Up: 145.255.232.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 145.255.232.128/26
Down right: 145.255.232.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
145.255.232.166	A	mail.dumrt.ru
145.255.232.166	A	mail.halalgid.com
145.255.232.166	A	mail.islam-today.ru
145.255.232.202	PTR	mx1.alliance-ar.ru
145.255.232.202	A	mx.angar-rf.ru
145.255.232.202	A	mx.alliance-ar.ru