Robtex

Up: 83.167.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 83.167.16.0/22
Down right: 83.167.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.167.16.69	PTR	eugene.isnet.ru
83.167.16.103	A	own3dh4rd.com
83.167.16.111	A+PTR	comp.isnet.ru
83.167.16.138	A+PTR	mail.kdau.ru
83.167.16.138	A	mail.defmod.com
83.167.16.138	A	uralbidin.ru
83.167.16.251	A	brizovsky.ru
83.167.17.4	A	vrp.pressa66.ru
83.167.17.4	A	virp.vrp.pressa66.ru
83.167.17.165	PTR	business-center.tpt.su
83.167.17.165	A	mx1.diasan-dializ.ru
83.167.17.165	A	mx1.uphc.ru
83.167.18.13	PTR	railship.ru
83.167.18.53	A+PTR	lucky.isnet.ru
83.167.18.62	A+PTR	t-pay.isnet.ru
83.167.18.71	A	ns1.prospekt-ekb.ru
83.167.18.116	PTR	it-monolit.ru
83.167.18.181	A+PTR	st.isnet.ru
83.167.18.216	A+PTR	rodger.isnet.ru
83.167.19.12	A	r1.sn-pontn-n8ml.googlevideo.com
83.167.19.37	A+PTR	pavel.isnet.ru
83.167.19.47	A+PTR	wow.isnet.ru
83.167.19.139	PTR	animeshko.isnet.ru
83.167.19.178	A	alterbox.isnet.ru
83.167.19.237	A+PTR	iva.isnet.ru
83.167.19.249	A	sr.qm-s.com
83.167.19.249	A	mail.qm-s.com
83.167.20.99	PTR	elders.ru
83.167.20.99	A	mx.elders.ru
83.167.20.99	A	root.elders.ru
83.167.20.143	A+PTR	ugshk.ru
83.167.20.143	A+PTR	mxsv.ugshk.ru
83.167.20.173	A+PTR	mail.pkes.ru
83.167.20.209	A	ekb.netlabsystems.com
83.167.20.242	PTR	legioner.isnet.ru
83.167.20.252	PTR	sergey.isnet.ru
83.167.21.3	A	keys.isnet.ru
83.167.21.29	A	rasta.isnet.ru
83.167.21.79	PTR	work.t-pc.ru
83.167.21.87	A	dok.isnet.ru
83.167.21.125	PTR	happy-day.isnet.ru
83.167.21.137	A+PTR	popandopolos.isnet.ru
83.167.21.146	A+PTR	mail.velto.ru
83.167.21.147	A+PTR	euro.isnet.ru
83.167.21.147	A	globus.isnet.ru
83.167.21.230	A+PTR	shells.isnet.ru
83.167.22.3	A	crazy.isnet.ru
83.167.22.45	PTR	blacksee.isnet.ru
83.167.22.53	A	ekait.ru
83.167.22.53	A	ns.sanatin.ru
83.167.22.53	A	sanatin.ru
83.167.22.100	A	pvvking.ru
83.167.22.173	PTR	intranet.x-tensive.com
83.167.22.222	PTR	huxepa.isnet.ru
83.167.23.77	A	andrey.isnet.ru
83.167.23.104	PTR	mail.bella-ural.ru
83.167.23.111	A+PTR	tomcat.isnet.ru
83.167.23.158	A	ya.mseso.ru
83.167.23.164	PTR	gw.urcee.ru
83.167.23.164	A+PTR	relay.ymrc.ru
83.167.23.166	A	ungk.pro
83.167.23.166	A	www.ungk.pro
83.167.23.212	PTR	mail.uraltermosvar.ru
83.167.23.217	PTR	rosstour.ru