Robtex

Up: 78.31.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 78.31.24.0/22
Down right: 78.31.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.31.24.12	A+PTR	extranetodbc.i.cz
78.31.25.5	PTR	sdtestatt.i.cz
78.31.25.10	A+PTR	vpn.i.cz
78.31.25.33	A+PTR	fw1.i.cz
78.31.25.34	PTR	fw2.i.cz
78.31.25.35	A+PTR	fw3.i.cz
78.31.25.36	A+PTR	fw4.i.cz
78.31.25.37	A	fw5.i.cz
78.31.25.66	A+PTR	ns.i.cz
78.31.25.129	A+PTR	kamna.i.cz
78.31.25.131	A+PTR	altex.i.cz
78.31.25.133	A+PTR	s2-mlab.i.cz
78.31.25.133	A	s2.mlab.cz
78.31.25.136	A+PTR	imap.i.cz
78.31.25.137	A+PTR	linux.i.cz
78.31.25.138	A+PTR	fw-cpost.i.cz
78.31.25.140	A+PTR	test.delinfo.cz
78.31.25.144	PTR	spisovka-exprit.i.cz
78.31.25.145	A+PTR	spsliteap.i.cz
78.31.26.6	A+PTR	www.gallery.cz
78.31.26.10	A+PTR	karta.rzp.cz
78.31.26.11	A+PTR	i.rzp.cz
78.31.26.12	A	sdpt.i.cz
78.31.26.13	A	sdpn.i.cz
78.31.26.17	A+PTR	agama.i.cz
78.31.26.19	A+PTR	adax.i.cz
78.31.26.23	A	msz.qmshc.cz
78.31.26.42	A+PTR	mx2.vse.cz
78.31.26.50	A+PTR	antibot.cz
78.31.26.50	A+PTR	www.antibot.cz
78.31.26.105	A	ftp.i.cz
78.31.26.107	PTR	siczdohled01.i.cz
78.31.26.115	A	www.amaio.com
78.31.26.115	A	spravadokumentu.cz
78.31.26.115	A	icz.eu
78.31.26.174	A+PTR	ipbx.i.cz
78.31.27.2	A+PTR	vidle.i.cz
78.31.27.2	A	vidle.icz.cz
78.31.27.3	A+PTR	vidle1.i.cz
78.31.27.52	A+PTR	oriondrac.i.cz
78.31.27.54	A+PTR	mintaka.i.cz
78.31.27.56	A+PTR	sklady.i.cz
78.31.27.56	A	kopra.i.cz
78.31.27.57	A+PTR	debhot.i.cz
78.31.27.58	A+PTR	akara.i.cz
78.31.27.59	PTR	nbsec.i.cz
78.31.27.83	A+PTR	ucproxy.i.cz
78.31.27.161	A	www.crv-md.cz
78.31.27.161	A	crv-md.cz
78.31.27.162	A+PTR	rt.i.cz
78.31.27.164	A+PTR	sdatt.i.cz
78.31.27.169	A+PTR	rt2.i.cz
78.31.27.170	A	sdatt2.i.cz
78.31.27.178	PTR	sdtestweb.i.cz
78.31.27.179	A+PTR	sdtestatt.i.cz
78.31.27.181	A	icz.eu
78.31.27.181	A	digitalniurad.cz
78.31.27.181	A	iczgroup.com
78.31.27.186	A+PTR	rttest.i.cz
78.31.27.187	PTR	waf.i.cz
78.31.27.187	A	www.amaio.com
78.31.27.187	A	www.amaio.cz
78.31.27.194	A+PTR	veronika.i.cz
78.31.27.195	A	numvirt.i.cz
78.31.27.210	A	kk.i.cz
78.31.27.234	PTR	s2.mlab.cz
78.31.27.235	A+PTR	sec.i.cz
78.31.27.244	A	penetrak.i.cz
78.31.28.42	A+PTR	vkonference-opa.i.cz
78.31.29.27	A	sdpn.i.cz