Robtex

Up: 81.89.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.89.56.0/22
Down right: 81.89.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.89.56.3	A+PTR	nscache.ltc.sk
81.89.56.17	A	avmail-m.ltc.sk
81.89.56.19	A	mailhub-m.ltc.sk
81.89.56.20	A	mx.consolatoslovacco.it
81.89.56.20	A	mx.babetko.sk
81.89.56.24	A+PTR	avmail.wilbury.sk
81.89.56.26	A	webs1-m.ltc.sk
81.89.56.27	A+PTR	webs1.ltc.sk
81.89.56.30	A+PTR	cust-db.ltc.sk
81.89.56.32	PTR	ws1.ltc.sk
81.89.56.32	A	architektradi.sk
81.89.56.32	A	vkzam.sk
81.89.56.33	PTR	svc1.ltc.sk
81.89.56.40	A+PTR	svs1.ltc.sk
81.89.56.43	A	ad.nic.sk
81.89.56.43	A	svs2-m.ltc.sk
81.89.56.45	A	cust-mysql4.ltc.sk
81.89.56.48	A+PTR	mailhub.wilbury.sk
81.89.56.51	PTR	saleziani.saleziani.sk
81.89.56.51	A	www.3horky.sk
81.89.56.51	A	*.catholic.az
81.89.56.54	PTR	vpn-gw.wilbury.net
81.89.56.56	A+PTR	nova.billa.sk
81.89.56.56	A	postmaster.billa.sk
81.89.56.56	A	*.billa.sk
81.89.56.57	A+PTR	sk.freebsd.org
81.89.56.65	PTR	webhost.maxmedia.sk
81.89.56.65	A	maxmedia.sk
81.89.56.65	A	mail.max-media.sk
81.89.56.68	PTR	motoride.motoride.sk
81.89.56.69	PTR	mgmt.motoride.sk
81.89.56.73	PTR	sevcik.sevcik.biz
81.89.56.73	A	mail.svietidla24.sk
81.89.56.73	A	mail.videoreceptar.sk
81.89.56.75	PTR	db.zoznamko.sk
81.89.56.76	PTR	savione.savione.sk
81.89.56.81	A+PTR	git.silcnet.org
81.89.56.81	A	www.silcnet.org
81.89.56.81	A	silc.fi
81.89.56.94	PTR	i4.cover-it.sk
81.89.56.94	A	guardian.sk
81.89.56.94	A	tachografy.pe
81.89.56.98	A	reznicek.sk
81.89.56.98	A	prencov.sk
81.89.56.100	PTR	filesrv1.ltc.sk
81.89.56.101	A	lubomirgalko.sk
81.89.56.101	A	seokurz.com
81.89.56.104	PTR	zmail.bubble.eu
81.89.56.106	PTR	virtual.bubble.eu
81.89.56.106	A	europeanyouthcard.org
81.89.56.106	A	cbs.sk
81.89.56.112	PTR	tip.tiptravel.sk
81.89.56.112	A	adem.sk
81.89.56.112	A	*.tatratour.sk
81.89.56.132	A	ns1.bucinko.sk
81.89.56.138	PTR	mail2.monaqleasing.sk
81.89.56.143	A+PTR	stop910.stop910.com
81.89.56.143	A	stop910-2.stop910.com
81.89.56.145	PTR	mail.eukurier.sk
81.89.56.145	A	mail.lumatek.sk
81.89.56.145	A	mail.mx.lumatek.sk
81.89.56.147	A	stop910-2.stop910.com
81.89.56.147	A	stop910.stop910.com
81.89.56.172	A	mail.leso.sk
81.89.56.201	A+PTR	kancel-ipd.ltc.sk
81.89.56.202	A	server1.bst.sk
81.89.56.203	PTR	mail.bekosro.sk
81.89.56.204	A	mail.pb-ferrflex.sk
81.89.56.204	A	mail.pbferrflex.sk
81.89.56.209	PTR	bosta.bosta.sk
81.89.56.214	PTR	mail.studene.sk
81.89.56.214	A	mail.bmauto.sk
81.89.56.224	A	gw-wrx3.static.ivankanet.sk
81.89.56.230	A	gw-dobak.static.ivankanet.sk
81.89.56.234	A	gw-bielik.static.ivankanet.sk
81.89.56.236	A	gw-diskant.static.ivankanet.sk
81.89.56.241	PTR	gw-pitonak.static.ivankanet.sk
81.89.56.241	A	mail.ccpoprad.sk
81.89.56.241	A	www.curling.sk
81.89.56.250	A+PTR	gww-nat.ivankanet.sk
81.89.56.254	A	sw-ipd-ge0-1.ivankanet.sk
81.89.57.3	A	music.sk
81.89.57.21	A	cray.kyberia.sk
81.89.57.129	A	mail.nostek.sk
81.89.57.193	A	gobb.sk
81.89.58.130	PTR	perun.nlight.eu
81.89.58.213	A	tepelnecerpadlo.tk
81.89.59.8	A+PTR	81.89.59.8.host.vnet.sk
81.89.59.34	PTR	81.89.59.34.vnet.sk
81.89.59.34	A	ftp.surosound.sk
81.89.59.38	A	gw.arka.sk
81.89.59.76	A	81.89.59.76.host.vnet.sk
81.89.59.122	PTR	homemail.murat.sk
81.89.59.122	A	mail.kable.sk
81.89.59.122	A	mail.leonard.sk
81.89.59.140	A	mailin1.karireal.cz
81.89.59.140	A	mailin2.karireal.sk
81.89.59.140	A	mailin1.karireal.sk
81.89.59.164	A	mail.gog.sk
81.89.59.168	A	81.89.59.168.vnet.sk
81.89.59.181	A	dusky.sk
81.89.59.181	A	kaduc.sk
81.89.59.181	A	www.ttt.sk
81.89.60.2	PTR	mail.slovarm.sk
81.89.60.2	A	mail.slovplast-myjava.sk
81.89.60.22	A	email.myjava.sk
81.89.60.22	A	mail.myjava.sk
81.89.60.26	PTR	mail.dirickx.sk
81.89.60.98	PTR	mail2.mlproduktion.sk
81.89.60.138	PTR	manix.sk
81.89.60.139	PTR	manix.sk
81.89.60.231	A	fnm.fibermyjava.sk
81.89.60.252	A	81.89.60.252.vnet.sk
81.89.61.42	PTR	81.89.61.42.vnet.sk
81.89.61.42	A	mail.slovakor.sk
81.89.61.74	PTR	81.89.61.74.vnet.sk
81.89.61.114	PTR	iwik.org
81.89.61.114	A	iwik.sk
81.89.61.115	PTR	81.89.61.115.iwik.org
81.89.61.116	A	sip.iwik.org
81.89.61.119	A	kerio.b52.sk
81.89.61.120	A+PTR	irc.post.sk
81.89.61.121	A	irc.elite.sk
81.89.61.122	PTR	pegasus.wheel.sk
81.89.61.123	PTR	web.iwik.org
81.89.61.123	A	dopytovat.sk
81.89.61.123	A	devonport.sk
81.89.61.168	A+PTR	81.89.61.168.host.vnet.sk
81.89.61.188	A	www.servisujem.sk
81.89.61.189	A	gate.perun-capital.com
81.89.61.189	A	gatea.perun-capital.com
81.89.61.242	A+PTR	gw1.roedl.sk
81.89.61.248	A+PTR	gw2.roedl.sk
81.89.63.10	PTR	mx2.netech.sk
81.89.63.10	A	mail2.meracrest.sk
81.89.63.10	A	mx.the.sk
81.89.63.12	A	tvta3.sk
81.89.63.12	A	ta3tv.sk
81.89.63.16	PTR	ib.trustpay.eu
81.89.63.19	PTR	81.89.63.19.vnet.sk
81.89.63.19	A	test.trustpay.eu
81.89.63.20	A	ns.meracrest.sk
81.89.63.20	A	ns1.the.sk
81.89.63.32	PTR	81.89.63.32.host.vnet.sk
81.89.63.40	A	maxbetadmin.com
81.89.63.43	PTR	81.89.63.43.vnet.sk
81.89.63.50	A	web2.the.sk
81.89.63.50	A	web.the.sk
81.89.63.66	A+PTR	lb01.vnet.sk
81.89.63.66	A	dns.vnet.sk
81.89.63.66	A	dns1.vnet.sk
81.89.63.67	PTR	lb02.vnet.sk
81.89.63.129	A+PTR	gw-hq.vnet.sk
81.89.63.132	A	blackmoon.vnet.sk
81.89.63.134	A	nico.vnet.sk
81.89.63.136	A+PTR	gajo.vnet.sk
81.89.63.150	A	mailinbackup1.portalis.sk