Robtex

Up: 81.0.244.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 81.0.246.0/24
Down right: 81.0.247.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.0.246.1	A+PTR	r0-a.trustica.cz
81.0.246.8	PTR	joe.cz
81.0.246.9	A	dot.medvecky.net
81.0.246.10	A	vader2.trustica.net
81.0.246.12	A+PTR	www.wikileaks.cz
81.0.246.12	A	anti2.wikileaks.cz
81.0.246.12	A	mail.wikileaks.cz
81.0.246.13	PTR	sokordia.cz
81.0.246.14	PTR	xen0.clarexon.cz
81.0.246.16	A	support.sokordia.cz
81.0.246.17	A+PTR	xen0.clarexon.cz
81.0.246.19	PTR	www.jccr.cz
81.0.246.19	A	dovolenabezhranic.cz
81.0.246.19	A	jiznicechy.cz
81.0.246.20	A+PTR	newholly.matus.sk
81.0.246.20	A	holly.matus.sk
81.0.246.20	A	mail.matus.sk
81.0.246.22	A+PTR	web0.clarexon.cz
81.0.246.22	A	cxt.cz
81.0.246.22	A	clarexon.cz
81.0.246.23	PTR	ns4.trustica.cz
81.0.246.24	PTR	mail.medvecky.net
81.0.246.25	A	dom0.medvecky.net
81.0.246.26	A+PTR	mail.clarexon.cz
81.0.246.26	A	mail.extremecagefight.cz
81.0.246.26	A	mail.drechsler.cz
81.0.246.27	PTR	web.medvecky.net
81.0.246.28	PTR	national-geographic.cz
81.0.246.29	PTR	vm1.trustica.net
81.0.246.29	A	mail.vladimirekart.cz
81.0.246.29	A	mail.beampra.cz
81.0.246.30	PTR	kyberia.sk
81.0.246.30	A	kyberia.eu
81.0.246.31	PTR	chosting.clarexon.cz
81.0.246.31	A	moraviaconsultantsgroup.com
81.0.246.31	A	waldorfdedina.cz
81.0.246.33	PTR	axs0.adineo.cz
81.0.246.33	A	ip2.jccr.cz
81.0.246.34	PTR	axs0-ip2.adineo.cz
81.0.246.34	A	ip3.jccr.cz
81.0.246.35	A	ip4.jccr.cz
81.0.246.37	PTR	rt.casablanca.cz
81.0.246.37	A	casa-rt.trustica.net
81.0.246.39	PTR	macron-reserved-81.0.246.39.trustica.net
81.0.246.40	PTR	vm1.trustica.net
81.0.246.40	A	xgmail.eu
81.0.246.40	A	mail.wed.sk
81.0.246.41	PTR	geocaching.cz
81.0.246.43	A	mgmt.trustica.net
81.0.246.44	A+PTR	www.mkcr.cz
81.0.246.45	PTR	adineo-hosting.trustica.net
81.0.246.45	A	jinek.com
81.0.246.48	PTR	ads-dts01.adineo.cz
81.0.246.49	PTR	unassigned-81.0.246.49.trustica.net
81.0.246.49	A	sngguru.com
81.0.246.49	A	hrajpoker.com
81.0.246.53	A	mvk.trustica.net
81.0.246.55	A+PTR	backup1.trustica.net
81.0.246.58	A	jabber.trustica.net
81.0.246.60	PTR	www.trustica.cz
81.0.246.60	A	trustica.com
81.0.246.60	A	pwww.trustica.cz
81.0.246.62	A	monitoring.trustica.net
81.0.246.63	PTR	unassigned-81.0.246.63.trustica.net
81.0.246.64	PTR	unassigned-81.0.246.64.trustica.net
81.0.246.65	A+PTR	customer-housing-gw.trustica.net
81.0.246.66	PTR	windsurfing.cz
81.0.246.66	A	mail.ondrejsynek.cz
81.0.246.66	A	porgracia.cz
81.0.246.67	PTR	xen0.mres.cz
81.0.246.69	A+PTR	bender.igloonet.cz
81.0.246.69	A	diabecare.sk
81.0.246.69	A	cooperative.cz
81.0.246.71	A	galerie.igloonet.cz
81.0.246.72	PTR	morbo.igloonet.cz
81.0.246.75	PTR	chodounsky.cz
81.0.246.75	A	zmrdi.com
81.0.246.75	A	www.uswgame.net
81.0.246.76	A+PTR	anise.cz
81.0.246.76	A	anise.anise.cz
81.0.246.76	A	mail.anise.cz
81.0.246.77	PTR	bastard.bofh.cz
81.0.246.79	A+PTR	to.or.cz
81.0.246.79	A	hykova.cz
81.0.246.80	PTR	data.mediaresearch.cz
81.0.246.82	A	newweb.mediaresearch.cz
81.0.246.83	A+PTR	gwpn.mres.cz
81.0.246.83	A	gw.mres.cz
81.0.246.85	A	netservices2.casablanca.cz
81.0.246.86	PTR	web.netservices.cz
81.0.246.86	A	firemniden.cz
81.0.246.86	A	autocalounictvi-cl.cz
81.0.246.89	A+PTR	mail.netservices.cz
81.0.246.89	A	mail.protectglobal.cz
81.0.246.89	A	mail.esluzby.net
81.0.246.90	A+PTR	parfemy-alito.cz
81.0.246.90	A	www.alito.cz
81.0.246.90	A	stat.parfemy-alito.cz
81.0.246.91	PTR	unassigned-81.0.246.91.trustica.net
81.0.246.92	PTR	unassigned-81.0.246.92.trustica.net
81.0.246.99	PTR	queeg500.avc-cvut.cz
81.0.246.100	PTR	directadmin.hucot.eu
81.0.246.100	A	mail.prirodnipomoc.cz
81.0.246.100	A	odznak-odznaky.cz
81.0.246.102	PTR	mail.lip.trustica.net
81.0.246.105	PTR	lip-ip2.trustica.net
81.0.246.107	PTR	pms.trustica.cz
81.0.246.109	PTR	lip.trustica.net
81.0.246.113	PTR	hlava1.mediawork.cz
81.0.246.114	A	srdce.mediawork.cz
81.0.246.117	PTR	mediawork-reserved-81.0.246.117.trustica.net
81.0.246.118	A+PTR	mysql.mediawork.cz
81.0.246.118	A	doucit.cz
81.0.246.118	A	*.mediawork.cz
81.0.246.123	A	grid-de.adineo.cz
81.0.246.123	A	ads01.adineo.cz
81.0.246.127	PTR	unassigned-81.0.246.127.trustica.net
81.0.246.128	PTR	unassigned-81.0.246.128.trustica.net
81.0.246.130	PTR	euro4.prevent.trustica.net
81.0.246.130	A	be-soft.sk
81.0.246.134	PTR	tobiano.altairis.cz
81.0.246.134	A	gastropasscard.sk
81.0.246.134	A	relaxpass.sk
81.0.246.151	PTR	unassigned-81.0.246.151.trustica.net
81.0.246.162	PTR	dom0.webcorp.cz
81.0.246.164	PTR	mail.webcorp.cz
81.0.246.166	PTR	www.webcorp.cz
81.0.246.166	A	thomson.cz
81.0.246.184	PTR	webcorp-reserved-81.0.246.184.trustica.net
81.0.246.230	PTR	backuptest.trustica.cz
81.0.246.235	A	spamd.trustica.net
81.0.246.236	A+PTR	despam.trustica.net
81.0.246.237	A+PTR	jedi.macronsoftware.cz
81.0.246.237	A	zslibeznice.cz
81.0.246.237	A	www.dobromysl.cz
81.0.246.239	PTR	jedi2.macron.cz
81.0.246.239	A	smenarnahradeckralove.com
81.0.246.239	A	touristcentrum.cz
81.0.246.242	PTR	www2.ecsoftware.cz
81.0.246.242	A	reykjavik.cz
81.0.246.244	A	hati.cz
81.0.246.244	A	linux.ecweb.cz
81.0.247.64	PTR	unassigned-81.0.247.64.trustica.net
81.0.247.70	PTR	gw.mediaresearch.cz
81.0.247.76	PTR	admosphere.sk
81.0.247.98	PTR	rta-advert.rta.cz
81.0.247.104	PTR	www.rta.cz
81.0.247.122	PTR	ec-vs.dacc.cz
81.0.247.134	PTR	mail.qf.cz
81.0.247.134	A	mail.extasyclub.cz
81.0.247.134	A	mail.industry-online.eu
81.0.247.135	PTR	ns.qf.cz
81.0.247.137	PTR	sns.qf.trustica.net
81.0.247.137	A	perfecte.cz
81.0.247.137	A	hosting.qf.cz
81.0.247.161	A	mediaweb-gw.trustica.net
81.0.247.162	PTR	obelix.mediaweb.cz
81.0.247.162	A	petrovicky.net
81.0.247.162	A	zaz-tepelnatechnika.cz
81.0.247.167	A	evidence.mediaweb.cz
81.0.247.194	PTR	tix.trustica.cz