Robtex

Up: 195.58.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 195.58.51.0/25
Down right: 195.58.51.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
195.58.51.0	PTR	51.elnet.msk.ru
195.58.51.127	PTR	h127.51.elnet.msk.ru
195.58.51.128	PTR	h128.51.elnet.msk.ru
195.58.51.151	PTR	actors.ru
195.58.51.151	A+PTR	chirus.ru
195.58.51.151	A+PTR	ns.actors.ru
195.58.51.161	A+PTR	hmed.ru
195.58.51.161	A	www.hmed.ru
195.58.51.161	A	tb7.ru
195.58.51.162	A+PTR	mail.actors.ru
195.58.51.162	A	mail.obedofis.ru
195.58.51.162	A	mail.tehno.ru
195.58.51.163	PTR	km1.ru
195.58.51.163	A	ns.hmed.ru
195.58.51.163	A	www.km1.ru
195.58.51.255	PTR	51.elnet.msk.ru