Robtex

Up: 81.92.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.92.152.0/22
Down right: 81.92.156.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.92.152.2	PTR	mail.pnsp.cz
81.92.152.35	PTR	mail.pnsp.cz
81.92.155.1	A	ns.coprosys.cz
81.92.155.1	A	ns.lompraha.cz
81.92.155.8	A	vpnm.coprosys.cz
81.92.155.12	PTR	smtp.coprosys.cz
81.92.155.33	PTR	pce1.autoin.cz
81.92.155.33	A	mail.autoin.cz
81.92.155.48	A	mail.bauch-navratil.cz
81.92.155.53	A+PTR	mail.domovufontany.cz
81.92.155.57	A	dohled-root.coprosys.cz
81.92.155.58	A	ps-babickarna.coprosys.cz
81.92.155.59	A	ps-babickarna-nat.coprosys.cz
81.92.155.65	A	vjisa.coprosys.cz
81.92.155.84	A	mtuma.coprosys.cz
81.92.155.88	A	silberovi.com
81.92.155.100	A+PTR	chrudim.coprosys.cz
81.92.155.100	A	vpncr.coprosys.cz
81.92.155.101	A+PTR	ns2.coprosys.cz
81.92.155.103	A	vpncr.coprosys.cz
81.92.155.105	A+PTR	imap.coprosys.cz
81.92.155.106	A	wifi-cr.coprosys.cz
81.92.155.108	A	pata.coprosys.cz
81.92.155.110	A	jirka.coprosys.cz
81.92.155.112	A	chrudim.nextlan.cz
81.92.155.114	PTR	jisovi.cz
81.92.155.114	A	vlada.coprosys.cz
81.92.155.118	A	dohled-zaloha.coprosys.cz
81.92.155.126	A	vetrnik-cr.coprosys.cz
81.92.155.173	PTR	posta.mukolin.cz
81.92.156.97	A+PTR	ns10.coprosys.cz
81.92.156.97	A	ns20.coprosys.cz
81.92.156.101	PTR	web2.leonet.cz
81.92.156.101	A	coprosys-leonet.cz
81.92.156.101	A	root.put.cz
81.92.156.108	A	mail.paintballshop.cz
81.92.156.113	A	gold-net.cz
81.92.156.118	PTR	mail.coprosys.cz
81.92.156.119	A+PTR	mail.coprosys.cz
81.92.156.119	A	mail.trytop.cz
81.92.156.119	A	mail.abatis.cz
81.92.156.122	A+PTR	mail.coprosys.net
81.92.156.122	A	mail.kosile.com
81.92.156.122	A	mail.finosa.cz
81.92.157.10	PTR	mail.avax.cz
81.92.157.10	A	malisped.cz
81.92.157.10	A	mail.neconasebe.cz
81.92.157.16	PTR	pen-pro-router.penpro.cz
81.92.157.16	A	mail.penpro.cz
81.92.157.16	A	vinice.cz
81.92.157.23	A	tonermaster.cz
81.92.157.24	A+PTR	mail.tangobt.cz
81.92.157.24	A	mail.odposlechy.com
81.92.157.24	A	mail.lokatory.cz
81.92.157.98	PTR	mail.glazura.cz
81.92.157.99	A+PTR	fw.aston-abora.cz
81.92.157.99	A	730964.com
81.92.157.118	A+PTR	mail.bakon.cz
81.92.157.118	A	bakon.cz
81.92.157.118	A	*.bakon.cz
81.92.157.185	PTR	r185.altus.cz
81.92.157.208	A+PTR	mail.gop.cz
81.92.157.208	A	webmail.gop.cz
81.92.157.225	A	tvrtm.cz
81.92.157.225	A	*.tvrtm.cz
81.92.157.245	PTR	vinit.cz
81.92.157.245	A	test.netron.cz
81.92.157.249	PTR	php52.gohost.cz
81.92.157.250	PTR	mail.gohost.cz
81.92.157.251	PTR	php53.gohost.cz
81.92.157.251	A	dieantwoord.cz
81.92.157.251	A	www.jose.cz
81.92.158.4	A+PTR	mail.ekotez.cz
81.92.158.7	A	mailservice.cz
81.92.158.12	A+PTR	mx.marexcom.cz
81.92.158.12	A	nonstop24.eu
81.92.158.16	PTR	16.158.92.81.mukolin.cz
81.92.158.21	PTR	mail.mukolin.cz
81.92.158.21	A	kolinko.cz
81.92.158.23	A	bob.divadlo-kolin.cz
81.92.158.49	A+PTR	dohled.cr-net.eu
81.92.158.61	PTR	ns1.excaliburarmy.eu
81.92.158.193	A	hk.exconsteel.cz
81.92.158.196	A+PTR	mail.exconsteel.cz
81.92.158.230	A+PTR	ns70.coprosys.cz
81.92.158.236	A+PTR	ns30.coprosys.cz
81.92.159.65	A	mail.medicolab.cz
81.92.159.65	A	gw.dentmedico.cz
81.92.159.194	A	ns2.easycomp.cz
81.92.159.195	PTR	hlavni.jabor.cz
81.92.159.195	A	sped.autosped.cz
81.92.159.195	A	www.autosped.cz
81.92.159.196	A	mail.vssped.cz
81.92.159.206	A+PTR	mail.ford-homolka.cz
81.92.159.206	A	mail.auto-homolka.cz
81.92.159.242	PTR	dako-cz.cz
81.92.159.243	PTR	dako-cz.cz
81.92.159.244	PTR	dako-cz.cz
81.92.159.245	PTR	dako-cz.cz
81.92.159.248	PTR	dako-cz.cz