Robtex

Up: 81.222.244.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 81.222.244.0/24
Down right: 81.222.245.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.222.244.22	PTR	glcrussia.com
81.222.244.22	PTR	re-con.ru
81.222.244.22	PTR	mail.audit-ajour.ru
81.222.244.50	A	ns2.nmr.su
81.222.244.82	A	mail.amadeus.ru
81.222.244.249	A+PTR	relay.penoplex.ru
81.222.244.250	PTR	edge.penoplex.ru
81.222.244.250	A	edge.xn--f1adbicseif4ab.xn--p1ai
81.222.244.250	A	edge.penopor.ru