Robtex

Up: 81.25.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.25.24.0/22
Down right: 81.25.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.25.26.2	A+PTR	st-software.com
81.25.26.2	A	www.st-software.com
81.25.26.2	A	nat.st-software.com
81.25.26.3	A	mail.st-software.com
81.25.26.16	A	ftp.st-software-ftp.com
81.25.26.16	A	st-software-ftp.com
81.25.26.16	A	*.st-software-ftp.com
81.25.26.26	A	osypenko.eu
81.25.26.27	A	osvita.cz
81.25.26.27	A	*.osvita.cz
81.25.26.27	A	webs.osvita.cz
81.25.26.150	A+PTR	gw.databox.cz
81.25.26.151	A+PTR	mail.databox.cz
81.25.26.156	A+PTR	server.systegra.cz
81.25.26.197	A	test2.webtra.cz
81.25.26.198	A+PTR	brdo.webtra.cz
81.25.26.199	A+PTR	mailprofiler199.c.cbsn.cz
81.25.26.199	A	bercacup.cz
81.25.27.10	A+PTR	ns2.cbsn.cz
81.25.27.10	A	ns2.tartarnet.cz
81.25.27.10	A	ns4.cbsn.cz
81.25.28.35	A	stone.palacsyner.cz
81.25.28.43	A	mail1.sgroupholding.cz
81.25.28.43	A	mail1.syner.cz
81.25.28.98	PTR	mail.tipsportarena.cz
81.25.28.98	A	mail.homecreditarena.cz
81.25.28.99	A	pc-arena2.tartarnet.cz
81.25.28.130	PTR	moravska.n.cbsn.cz
81.25.28.130	A	e-mail.acl-automotive.com
81.25.28.146	A+PTR	e-mail.acl-automotive.com
81.25.28.146	A	e-mail.acl-automotive.com.acl-coating.com
81.25.28.155	PTR	rout-havlikmgrhotspot.tartarnet.cz
81.25.28.210	PTR	rout-cernying.n.cbsn.cz
81.25.28.210	A	mail.aclak.cz
81.25.28.226	PTR	mail-alfavaria.c.cbsn.cz
81.25.28.226	A	mail.alfavaria.cz
81.25.28.226	A	mail.alfavaria.com
81.25.28.236	PTR	mail.oaza-net.cz
81.25.28.236	A	mail2.oaza-net.cz
81.25.28.250	PTR	nsi2.cbsn.cz
81.25.28.251	A+PTR	mx2.cbsmail.cz
81.25.28.251	A	mx2.tartarnet.cz
81.25.28.254	A+PTR	byelb.n.cbsn.cz
81.25.29.100	A+PTR	mail.astra.cz
81.25.29.100	A	mail.vtjrapid.cz
81.25.29.100	A	astra.cz
81.25.29.115	A	kli-ver-miler1.c.cbsn.cz
81.25.29.139	A+PTR	kli-ver-miler2.c.cbsn.cz
81.25.29.146	PTR	pfp.c.cbsn.cz
81.25.29.148	A	mail2.plazacenters.cz
81.25.29.149	PTR	hotspotplaza.c.cbsn
81.25.29.165	A+PTR	rout-hanusrad1.c.cbsn.cz
81.25.29.166	PTR	sawconsulting.c.cbsn.cz
81.25.29.178	PTR	kli-ver-colas.c.cbsn.cz
81.25.29.183	A	mail.autokpplus.cz
81.25.29.195	A	mail.spolak.eu
81.25.29.202	PTR	lbkancl.cbsn.cz
81.25.29.205	PTR	totbal.c.cbsn.cz
81.25.29.226	A+PTR	portal.inisoft.cz
81.25.29.229	PTR	81-25-29-229.c.cbsn.cz
81.25.29.229	A	www.chemistr.cz
81.25.29.229	A	chemistr.cz
81.25.29.242	A	mx.reliasprava.cz
81.25.30.2	A	mail.reliasprava.cz
81.25.30.3	A	www.vinton.cz
81.25.30.3	A	www.kallib.cz
81.25.30.3	A	mail.kallib.cz
81.25.30.22	A+PTR	tauper-ver.c.cbsn.cz
81.25.30.66	PTR	coloseum.c.cbsn.cz
81.25.30.83	PTR	kli-pc-termizo.c.cbsn.cz
81.25.30.83	A	www.termizo.cz
81.25.30.83	A	termizo.cz
81.25.30.118	A	mail.ddmliberec.cz
81.25.30.130	A	mail.galvanoplast-fischer.cz
81.25.30.130	A	remote.galvanoplast-fischer.cz
81.25.30.202	PTR	mail.adamec-audit.cz
81.25.30.202	A	gw.adamec-audit.cz
81.25.30.227	A+PTR	iqlandia1.c.cbsn.cz
81.25.30.228	A+PTR	iqlandia2.c.cbsn.cz
81.25.30.250	A+PTR	gw.dehtak.cz
81.25.30.250	A	mail.kolombo.info
81.25.31.38	A	mail.zhpartners.cz
81.25.31.51	A+PTR	postak.ygolf.cz
81.25.31.51	A	ygolf.cz
81.25.31.68	A+PTR	mail.fenestra-wieden.cz
81.25.31.122	A	mail.zskola.cz
81.25.31.125	A	mail.zhpartners.cz