Robtex

Up: 81.91.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 81.91.32.0/20
Down right: 81.91.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.91.32.0	PTR	vc0.utk.ru
81.91.32.98	PTR	vc98.utk.ru
81.91.32.98	A	hcl.ru
81.91.32.130	PTR	vc130.utk.ru
81.91.32.250	A	taxired.info
81.91.33.129	A	webmail.utk.ru
81.91.33.130	PTR	domino.utk.ru
81.91.33.130	A	hi-stream.info
81.91.33.130	A	artpolitika.ru
81.91.33.226	PTR	magnum.utk.ru
81.91.34.26	A	mail.garantshina.com
81.91.34.26	A	mail.uralshintorg.ru
81.91.34.26	A	mail.autoshinsnab.com
81.91.34.158	A	mail.ecki.ru
81.91.34.158	A	mail.regkap.ru
81.91.34.158	A	mail.azkapital.ru
81.91.35.34	A+PTR	serv.radiansb.ru
81.91.35.35	PTR	mail.radiansb.ru
81.91.35.66	A	boyard.utk.ru
81.91.35.67	A	ctm.utk.ru
81.91.35.74	A	spk.utk.ru
81.91.35.99	PTR	router.sbat.ru
81.91.35.102	PTR	www.sbat.ru
81.91.35.131	PTR	mail.iddqdd.ru
81.91.35.131	A	relay1.dk-expert.ru
81.91.35.131	A	ns1.dk-sp.com
81.91.35.133	PTR	www.datakrat.ru
81.91.35.145	PTR	iskrauraltel.ru
81.91.35.178	A	tomupics.utk.ru
81.91.35.186	PTR	ns.artikul.ru
81.91.35.198	A+PTR	mail.alutech-ural.ru
81.91.35.206	A+PTR	mail1.sorm66.ru
81.91.35.234	A	oldham.utk.ru
81.91.35.254	PTR	dsc.su
81.91.36.0	A	p91-36-0.utk.ru
81.91.36.1	PTR	p91-36-1.utk.ru
81.91.36.2	A	p91-36-2.utk.ru
81.91.36.3	A+PTR	ns2.utk.ru
81.91.36.5	A	ns2.utk.ru
81.91.36.7	A	p91-36-7.utk.ru
81.91.36.54	A	mx.k-maestro.ru
81.91.36.54	A	mx.1ndm.ru
81.91.36.54	A	xn--72cah1hqbba4d4ab7igi0h.com
81.91.36.106	PTR	ogfe.ru
81.91.36.110	A+PTR	email.okb-novator.ru
81.91.36.110	A	okb-novator.ru
81.91.36.110	A	www.okb-novator.ru
81.91.36.130	PTR	uralorgres.ru
81.91.36.170	A+PTR	mail-old.eliz.ur.ru
81.91.36.243	PTR	mail.ur.ite-ng.ru
81.91.37.3	A+PTR	ns.utk.ru
81.91.37.22	A+PTR	torg-line.utk.ru
81.91.37.70	PTR	azkapital.utk.ru
81.91.37.70	A	www.regkap.ru
81.91.37.70	A	regkap.ru
81.91.37.210	PTR	old.shampan.ru
81.91.37.214	PTR	uvtb.shampan.ru
81.91.37.234	A	smak.utk.ru
81.91.38.50	PTR	utyre.ru
81.91.38.50	A	mail.adsur.ru
81.91.38.66	PTR	penetron.ru
81.91.38.66	A	mail.xn--j1ane7b.xn--p1ai
81.91.38.66	A	mail.penetron.ru
81.91.38.142	A	mail.stroybatural.ru
81.91.38.154	A	ns2.iko.ru
81.91.38.166	A	mail-internet.unitedcoordinates.ru
81.91.38.183	PTR	mail.wurth.ur.ru
81.91.38.190	A+PTR	office-gw2.kredos.ru
81.91.38.190	A	mail2.kredos.ru
81.91.38.194	A+PTR	www.etme.ru
81.91.38.195	PTR	relay.eburg.etm.ru
81.91.38.196	A+PTR	smtp.eburg.etm.ru
81.91.38.197	A	eburg.etm.ru
81.91.39.67	PTR	uifr.ru
81.91.39.142	PTR	fondl.ru
81.91.39.178	PTR	elvz.newalkona.ru
81.91.39.178	A	hosting.newalkona.ru
81.91.39.178	A	hosting.vinshampan.ru
81.91.39.242	A	sogaz.utk.ru
81.91.40.2	A+PTR	mail.cibitalunigas.ru
81.91.40.6	A	utk.ekb.ru
81.91.40.10	A	mx.ekaterinburgexpo.ru
81.91.40.10	A	mail.ekaterinburgexpo.ru
81.91.40.34	A	mail.kanaflex.ru
81.91.40.54	PTR	mail.biosvet.ru
81.91.40.74	PTR	m3.acesoft.ru
81.91.40.74	A	mail.jyoshinmon-shorin.ru
81.91.40.102	PTR	tspural.ru
81.91.40.128	PTR	81-91-40-128.utk.ru
81.91.40.146	A	mx.xn--80azdd.xn--p1ai
81.91.40.147	A	mail.npoa.ru
81.91.40.147	A	mailer.npoa.ru
81.91.40.192	PTR	81-91-40-192.utk.ru
81.91.41.30	PTR	lando.ru
81.91.41.86	A	mx.ubrd.ru
81.91.41.100	PTR	mail.service-it.ru
81.91.41.110	PTR	rolik.ru
81.91.41.115	A	avt-mx2.iceu.ru
81.91.41.138	A	fan.utk.ru
81.91.41.139	PTR	rits.utk.ru
81.91.41.146	PTR	uti.ru
81.91.41.150	A	mail.vrnt.ru
81.91.41.154	A	sredural.utk.ru
81.91.41.242	A	ns02.olips.ru
81.91.41.242	A	ns02.uralsts.ru
81.91.42.3	PTR	mail.lmgaz.ru
81.91.42.10	A+PTR	mail.lmgaz.ru
81.91.42.10	A	ns.lmgaz.ru
81.91.42.10	A	lmgaz.ru
81.91.42.30	A	mineart.ru
81.91.42.64	PTR	solid-64.utk.ru
81.91.42.66	PTR	solidgroup.ru
81.91.42.105	A	mx0.nazakaz.su
81.91.42.112	A	pasport66.ru
81.91.42.112	A	itsever.ru
81.91.42.128	PTR	128-42-91-81.utk.ru
81.91.42.186	A	mail.igstroy.ru
81.91.42.195	PTR	ns.uep-cd.ru
81.91.43.60	A	www.whiteit.ru
81.91.43.114	PTR	ingras.ru
81.91.43.171	A	nv-edge.skbkontur.ru
81.91.43.171	A	nv-edge.skbkontur.com
81.91.44.0	PTR	0-44-91-81.utk.ru
81.91.44.50	A	ekb.66.rospotrebnadzor.ru
81.91.44.50	A	fbuz66.ru
81.91.44.53	A	xn----8sbk4acwdx.xn--p1ai
81.91.44.82	A	tksk.ru
81.91.44.98	PTR	m-dar.ru
81.91.44.128	PTR	128-44-91-81.utk.ru
81.91.44.142	A	farmcenter.ur.ru
81.91.44.246	A	smtp.ideco.ru
81.91.44.246	A	gate.ideco.ru
81.91.45.0	PTR	p91-57-0.utk.ru
81.91.45.54	A	internet.iko.ru
81.91.45.54	A	mail-internet.iko.ru
81.91.45.54	A	mars0507.iko.ru
81.91.45.226	PTR	express-credit.granbank.ru
81.91.46.9	PTR	mail.rcc-group.ru
81.91.46.39	A	disk.rcc-group.ru
81.91.46.40	A	rmk-finance.ru
81.91.46.40	A	directum.rcc-group.ru
81.91.46.40	A	www.rmk-finance.ru
81.91.46.95	A+PTR	mail1.rcc-group.ru
81.91.47.0	PTR	utk-47-0.utk.ru
81.91.47.128	PTR	skbkontur-47-128.utk.ru
81.91.47.129	A+PTR	hq.skbkontur.ru
81.91.47.131	PTR	hqmail.skbkontur.ru
81.91.47.135	A	hqmail.skbkontur.ru
81.91.47.226	PTR	www.skbkontur.ru
81.91.48.0	PTR	48-0.dial.utk.ru
81.91.48.40	A	gazeks.com
81.91.48.45	A	email.gazeks.com
81.91.48.48	A	mail2.premvtk.ru
81.91.48.99	A+PTR	mail.fatfactory.ru
81.91.48.99	A	relay2.rusagromaslo.com
81.91.48.99	A	relay2.fatfactory.ru
81.91.48.147	A	mail.garantshina.com
81.91.48.147	A	mail.uralshintorg.ru
81.91.48.147	A	mail.autoshinsnab.com
81.91.48.163	PTR	48-163.dial.utk.ru
81.91.49.0	PTR	49-0.dial.utk.ru
81.91.49.6	A	ectbbce.ru
81.91.49.6	A	ectb-bce.ru
81.91.49.6	A	49-6.dial.utk.ru
81.91.49.124	A	mail.gudsr.ru
81.91.49.247	A	mail.u-term.ru
81.91.50.66	A+PTR	mail.miacso.ru
81.91.50.67	A+PTR	relay.miacso.ru
81.91.50.70	A	mail.xn--80aplko3a.xn--p1ai
81.91.50.156	A	ntv-m.energoterra.info
81.91.50.166	A	mx.avs-logistic.ru
81.91.50.166	A	mx.avs-logistic.com
81.91.50.181	PTR	mail.infosysco.ru
81.91.50.181	A	infosysco.org
81.91.50.181	A	infosysco.ru
81.91.50.188	PTR	50-188.dial.utk.ru
81.91.50.190	PTR	50-190.dial.utk.ru
81.91.51.13	A	ns1.dk-sp.com
81.91.51.13	A	relay1.dk-sp.com
81.91.51.13	A	ns2.zebracards.ru
81.91.51.162	PTR	51-162.dial.utk.ru
81.91.52.0	PTR	81-91-52-0.utk.ru
81.91.52.90	A	mail.tkuth.ru
81.91.52.134	A	crmm.utss.ru
81.91.52.147	A	psmural.ru
81.91.52.192	PTR	81-91-52-192.utk.ru
81.91.53.14	PTR	ns.trans-utk.ru
81.91.53.18	PTR	mail.olips.ru
81.91.53.18	A	mail.dirigabl.ru
81.91.53.18	A	mail.nm-ekb.ru
81.91.53.46	PTR	metaset.ru
81.91.53.51	A	konkurs.ideco.ru
81.91.53.52	A	helpdesk.ideco.ru
81.91.53.126	A	niceu.utk.ru
81.91.53.166	A+PTR	mail.metamodel.ru
81.91.53.166	A	metamodel.ru
81.91.53.166	A	servicemodel.ru
81.91.53.170	PTR	pr66.ru
81.91.53.198	PTR	mx.asp.ru
81.91.53.203	PTR	irline-ekb.ru
81.91.54.14	A	mail.ed-ekb.ru
81.91.54.74	A	mail.repropark-ural.ru
81.91.54.74	A	repropark-ural.ru
81.91.56.28	A	mail.urbo.su
81.91.56.78	A	mail.uaz-glazurit.ru
81.91.56.78	A	mail.glazurit.ru
81.91.56.128	PTR	uralsmart-128.utk.ru
81.91.56.160	PTR	uie-160.utk.ru
81.91.56.178	A	soap.eum.ru
81.91.56.178	A	soap.ukberkut.ru
81.91.56.178	A	mail.eum.ru
81.91.56.192	PTR	uralsmart-192.utk.ru
81.91.56.224	PTR	56-224.utk.ru
81.91.56.234	A	mail2.technex.ru
81.91.57.0	A+PTR	p91-57-0.utk.ru
81.91.57.3	A	p91-57-3.utk.ru
81.91.57.4	A	p91-57-4.utk.ru
81.91.57.5	A	p91-57-5.utk.ru
81.91.57.97	PTR	ms.skbkontur.ru
81.91.57.97	A	msmail.skbkontur.ru
81.91.57.194	PTR	mail.uti.ru
81.91.57.230	A	mail.uemz.ru
81.91.57.245	A	mail.palmetta.ru
81.91.57.245	A	smtp.palmetta.ru
81.91.58.26	PTR	texinvest.utk.ru
81.91.58.70	PTR	conventural.ru
81.91.58.186	A	sts.utk.ru
81.91.58.206	A	game.utk.ru
81.91.58.227	A	music.utk.ru
81.91.59.18	A+PTR	umz.utk.ru
81.91.59.22	A	phone.utk.ru
81.91.59.28	A	gk.utk.ru
81.91.59.34	A	sibway.utk.ru
81.91.59.38	PTR	mail.lotus1.ru
81.91.59.53	A	mail2.ocm.ru
81.91.59.81	A+PTR	sw2.utk.ru
81.91.59.82	A	contact.utk.ru
81.91.59.84	A	metcons.utk.ru
81.91.59.102	A+PTR	anbor.utk.ru
81.91.59.110	A	umk.utk.ru
81.91.59.170	PTR	mx.constanta-urist.ru
81.91.59.170	A	constanta-urist.ru
81.91.60.0	PTR	p91-60-0.utk.ru
81.91.60.22	A	wurth.utk.ru
81.91.60.38	A	iserver.polis.ur.ru
81.91.60.98	PTR	monetka.ru
81.91.60.99	PTR	relay.monetka.ru
81.91.60.100	A	relay.monetka.ru
81.91.60.130	PTR	p91-60-130.utk.ru
81.91.60.226	PTR	relay.ugstr.ru
81.91.61.78	A+PTR	mail.iak.ru
81.91.61.78	A	a230-118.iak.ru
81.91.61.118	PTR	mail.si-e.ru
81.91.61.226	A+PTR	mail.secom.ru
81.91.61.226	A	xn--j1aefk4d.xn--p1ai
81.91.61.230	A	itc.utk.ru
81.91.61.252	PTR	zra-gw-252.utk.ru
81.91.61.252	A	xn--80aaahf3acss1a6a8b1h.xn--p1ai
81.91.62.0	PTR	utk-0.utk.ru
81.91.62.122	A	xn--k1ajs.xn--p1ai
81.91.62.122	A	metalloshkaf.ru
81.91.62.122	A	urallitc.ru
81.91.62.128	PTR	utk-128.utk.ru
81.91.62.142	A	vpnhost.utk.ru
81.91.63.0	PTR	p81-91-63-0.utk.ru
81.91.63.37	A	mail.lc25.ru
81.91.63.37	A	mail.2382525.ru
81.91.63.37	A	ns.2382525.ru
81.91.63.148	A	mail.ooo-elsy.ru
81.91.63.176	A	mail.vs-lesteh.ru
81.91.63.176	A	vs-lesteh.ru
81.91.63.176	A	www.vs-lesteh.ru
81.91.63.202	A	mail.it-ekb.ru
81.91.63.202	A	ns.it-ekb.ru