Robtex

Up: 217.23.138.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.23.139.0/25
Down right: 217.23.139.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.23.139.0	PTR	subnet.rusonyx.ru
217.23.139.5	PTR	mta1.ddnscheck.com
217.23.139.5	A	ns1.push-leasy.com
217.23.139.5	A	stimshop.biz
217.23.139.7	PTR	almdev.com
217.23.139.7	A	ladyask.ru
217.23.139.7	A	www.almdev.com
217.23.139.9	PTR	ptr.5x00.com
217.23.139.9	A	ns2.detmoda.ru
217.23.139.9	A	ns1.detmoda.ru
217.23.139.14	PTR	mta1.nsreply.com
217.23.139.14	A	nsreply.com
217.23.139.14	A	cdn.game01.ru
217.23.139.16	PTR	ptr.5x00.com
217.23.139.16	A	skybit.ru
217.23.139.16	A	sl27.ru
217.23.139.25	A+PTR	www.importles.ru
217.23.139.36	A	lemel.ru
217.23.139.47	A	mafona.ru
217.23.139.47	A	electrokoleso.ru
217.23.139.47	A	www.mafona.ru
217.23.139.53	A	armdoor.ru
217.23.139.79	A+PTR	b24.hunter-go.ru
217.23.139.79	A	www.huntergo.ru
217.23.139.92	A	radiorandom.tk
217.23.139.93	PTR	medovuha.ru
217.23.139.93	A	www.medovuha.ru
217.23.139.94	PTR	2lenses.ru
217.23.139.94	A	aiula.ru
217.23.139.94	A	mail.aiula.ru
217.23.139.99	A+PTR	midprint.ru
217.23.139.99	A	www.midprint.ru
217.23.139.101	A	ns1.pazhma.ru
217.23.139.101	A	2302.ru
217.23.139.101	A	pazhukov.com
217.23.139.103	PTR	egor.example.com
217.23.139.103	A	skit.ru
217.23.139.112	A	mojoshopper.ru
217.23.139.114	PTR	mta2.mojoshopper.ru
217.23.139.115	A	mta1.exatra.ru
217.23.139.115	A	exatra.ru
217.23.139.122	A	davlinka.ru
217.23.139.125	PTR	mail.omsy.ru
217.23.139.129	A	idealcredit.ru
217.23.139.137	PTR	oflameron.com
217.23.139.137	A	www.oflameron.com
217.23.139.137	A	www.shmeleff.com
217.23.139.140	A+PTR	ns3.mobipark.ru
217.23.139.142	PTR	unused.caravan.ru
217.23.139.142	A	www.unclesamdates.tk
217.23.139.142	A	mail.unclesamdates.tk
217.23.139.152	PTR	ptr.5x00.com
217.23.139.174	A+PTR	relaxinterior.ru
217.23.139.174	A	www.relaxinterior.ru
217.23.139.184	A	beregband.ru
217.23.139.187	A	ilangs.ru
217.23.139.194	PTR	mta2.bputis.com
217.23.139.202	PTR	aeron4ee7098b0.example.com
217.23.139.202	A	khadueva.online
217.23.139.203	PTR	palanktonitus.example.com
217.23.139.203	A	hedsohesfa.com
217.23.139.203	A	torsgotuldrat.com
217.23.139.229	A+PTR	italsvet.ru
217.23.139.245	A	fotomarafon.com
217.23.139.245	A	fotocross.ru
217.23.139.245	A	photocamp.ru
217.23.139.255	PTR	broadcast.caravan.ru