Robtex

Up: 194.135.20.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 194.135.20.0/24
Down right: 194.135.21.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.135.20.1	PTR	1.20.135.194.ktkru.ru
194.135.20.30	PTR	30.20.135.194.ktkru.ru
194.135.20.35	A	server.diaver.com
194.135.20.73	PTR	73.20.135.194.crimea-tk.ru
194.135.20.73	A	ns.red-rose.ru
194.135.20.73	A	redrose.ru
194.135.20.80	PTR	80.20.135.194.ktkru.ru
194.135.20.122	PTR	122.20.135.194.ktkru.ru
194.135.20.165	PTR	165.20.135.194.crimea-tk.ru
194.135.20.214	PTR	weg.ru
194.135.20.217	A+PTR	194-135-20-217.static.ktkru.ru
194.135.20.218	A+PTR	194-135-20-218.static.ktkru.ru
194.135.20.226	PTR	226.20.135.194.ktkru.ru
194.135.20.229	A+PTR	194-135-20-229.static.ktkru.ru
194.135.20.230	PTR	230.20.135.194.crimea-tk.ru
194.135.20.232	PTR	232.20.135.194.crimea-tk.ru
194.135.20.233	PTR	233.20.135.194.ktkru.ru
194.135.20.236	PTR	236.20.135.194.ktkru.ru
194.135.20.237	PTR	237.20.135.194.ktkru.ru
194.135.20.240	A+PTR	194-135-20-240.static.ktkru.ru
194.135.20.243	PTR	243.20.135.194.ktkru.ru
194.135.20.246	A+PTR	194-135-20-246.static.ktkru.ru
194.135.21.1	PTR	gw.website.ru
194.135.21.7	PTR	dns2.100mb.ru
194.135.21.50	PTR	vdlabs-2.100mb.net
194.135.21.50	A	bsd2.vdlabs.ru
194.135.21.50	A	rossiahotel.ru
194.135.21.52	PTR	intex21.100mb.net
194.135.21.55	PTR	ikont.ru
194.135.21.55	A	dentosluxe.ru
194.135.21.55	A	smiths-heimann.ru
194.135.21.59	PTR	promarm2.100mb.net
194.135.21.59	A	mail.equiprus.ru
194.135.21.61	PTR	ybw-group.ru
194.135.21.67	PTR	vdlabs-1.100mb.net
194.135.21.67	A	mail.yunosthotel.ru
194.135.21.67	A	ns.hotelcdt.ru
194.135.21.70	PTR	gezanne.ru
194.135.21.74	PTR	hello-baby.ru
194.135.21.76	A	lipton-tea.ru
194.135.21.76	A	mail.unitekgroup.org
194.135.21.76	A	fagioli.ru
194.135.21.77	PTR	h5.isi.ru
194.135.21.85	PTR	winblog.ru
194.135.21.119	PTR	ns2.inext.ru
194.135.21.119	A	mailer.inext.ru
194.135.21.119	A	host1.kristiancestaroteam.ru
194.135.21.168	A	mail.waterdrillers.org
194.135.21.168	A	mail.studiobellissima.ru
194.135.21.168	A	pravogorod.ru
194.135.21.253	A	mail.yamalextrim.com