Robtex

Up: 89.187.132.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 89.187.133.0/25
Down right: 89.187.133.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.187.133.1	PTR	cool-r.coolhousing.net
89.187.133.2	PTR	cool-r1.coolhousing.net
89.187.133.3	PTR	cool-r2.coolhousing.net
89.187.133.4	PTR	89.187.133.4.coolhousing.net
89.187.133.5	PTR	unassigned-89.187.133.5.coolhousing.net
89.187.133.6	PTR	89.188.133.6.coolhousing.net
89.187.133.10	A	lb01.flyweb.cz
89.187.133.11	A+PTR	lb02.flyweb.cz
89.187.133.13	A	lednice-valtice.info
89.187.133.14	PTR	unassigned-89.187.133.14.coolhousing.net
89.187.133.14	A	zubalik.com
89.187.133.14	A	isklad.cz
89.187.133.21	PTR	php53s01.flyweb.cz
89.187.133.22	PTR	php53s02.flyweb.cz
89.187.133.23	PTR	agenau.flyweb.cz
89.187.133.23	A	avatars.navitel.ru
89.187.133.23	A	sso.navitel.ru
89.187.133.24	PTR	taygeta.flyweb.cz
89.187.133.24	A	xrip.org
89.187.133.24	A	mail.penzionpohoda.com
89.187.133.25	PTR	gatria.flyweb.cz
89.187.133.28	A	fuzza.cz
89.187.133.30	PTR	unassigned-89.187.133.30.coolhousing.net
89.187.133.30	A	ns2.navitel.ru
89.187.133.30	A	ns.navitel.cz
89.187.133.31	PTR	php53s01.flyweb.cz
89.187.133.32	PTR	php53s02.flyweb.cz
89.187.133.33	PTR	php53s03.flyweb.cz
89.187.133.34	PTR	php53s04.flyweb.cz
89.187.133.35	PTR	php53s05.flyweb.cz
89.187.133.41	PTR	php52s01.flyweb.cz
89.187.133.42	PTR	php52s02.flyweb.cz
89.187.133.43	PTR	php52s03.flyweb.cz
89.187.133.44	PTR	php52s04.flyweb.cz
89.187.133.44	A	navitel.cz
89.187.133.45	PTR	php52s05.flyweb.cz
89.187.133.61	PTR	ror01.flyweb.cz
89.187.133.62	A+PTR	ror02.flyweb.cz
89.187.133.63	PTR	ror03.flyweb.cz
89.187.133.81	A+PTR	ftp01.flyweb.cz
89.187.133.82	PTR	ftp02.flyweb.cz
89.187.133.83	A+PTR	ftp03.flyweb.cz
89.187.133.92	PTR	mail02.flyweb.cz
89.187.133.93	PTR	mail03.flyweb.cz
89.187.133.101	PTR	php52.flyweb.cz
89.187.133.101	A	szmo.cz
89.187.133.101	A	szm.cz
89.187.133.103	PTR	mail.sednisi.cz
89.187.133.103	A	objednejsi.cz
89.187.133.103	A	vydelejsi.cz
89.187.133.104	A+PTR	menkar.flyweb.cz
89.187.133.105	PTR	unassigned-89.187.133.105.coolhousing.net
89.187.133.106	A+PTR	ror.flyweb.cz
89.187.133.106	A	zeta.flyweb.cz
89.187.133.108	PTR	mail.flyweb.cz
89.187.133.109	PTR	ftp.flyweb.cz
89.187.133.112	PTR	unassigned-89.187.133.112.coolhousing.net
89.187.133.131	A	mail.peteroravec.com
89.187.133.131	A	maa.sk
89.187.133.135	A	maa.sk
89.187.133.135	A	zafir.sk
89.187.133.135	A	strednygemer.sk
89.187.133.145	PTR	klient.lifeworks.sk
89.187.133.154	PTR	unassigned-89.187.133.154.coolhousing.net
89.187.133.154	A	lib.mf.cz
89.187.133.169	A	mailin2.mon-media.com
89.187.133.169	A	mailinbackup1.oktodigital.com
89.187.133.169	A	bstiavnica.sk
89.187.133.171	A+PTR	phabricator.feedo.cz
89.187.133.175	A	phabricator.feldsam.cz
89.187.133.176	PTR	web0.feldhost.cz
89.187.133.176	A	doublered.cz
89.187.133.176	A	katedralabb.sk
89.187.133.177	A+PTR	mx0.feldhost.cz
89.187.133.177	A	mx0.ikfsystems.sk
89.187.133.178	PTR	ns0.feldhost.cz
89.187.133.182	PTR	unassigned-89.187.133.182.coolhousing.net
89.187.133.182	A	sargas.flyweb.cz
89.187.133.185	PTR	unassigned-89.187.133.185.coolhousing.net
89.187.133.186	A+PTR	web1.feldhost.cz
89.187.133.186	A	www.cislo.info
89.187.133.186	A	mail.extrifit.cz
89.187.133.187	PTR	server2.oktodigital.com
89.187.133.187	A	mx0.oktodigital.com
89.187.133.188	PTR	unassigned-89.187.133.188.coolhousing.net
89.187.133.188	A	sirius.flyweb.cz
89.187.133.191	A+PTR	mx1.feldhost.cz
89.187.133.192	PTR	unassigned-89.187.133.192.coolhousing.net
89.187.133.192	A	ns2.veribox.com
89.187.133.192	A	ns1.dmcaguard.com
89.187.133.193	PTR	unassigned-89.187.133.193.coolhousing.net
89.187.133.193	A	ns2.dmcaguard.com
89.187.133.200	PTR	unassigned-89.187.133.200.coolhousing.net
89.187.133.201	PTR	unassigned-89.187.133.201.coolhousing.net
89.187.133.201	A	avodn.com
89.187.133.201	A	dmcaguard.com
89.187.133.202	PTR	unassigned-89.187.133.202.coolhousing.net
89.187.133.202	A	avodn.com
89.187.133.202	A	dmcaguard.com
89.187.133.208	PTR	unassigned-89.187.133.208.coolhousing.net
89.187.133.208	A	ns1.veribox.com
89.187.133.208	A	veribox.com
89.187.133.210	PTR	mail.flyweb.cz
89.187.133.210	A	mx.mgvsetin.cz
89.187.133.210	A	f05.flyweb.cz
89.187.133.227	A+PTR	cache.feldhost.cz
89.187.133.227	A	operaplus.cz
89.187.133.249	PTR	unassigned-89.187.133.249.coolhousing.net
89.187.133.251	PTR	unassigned-89.187.133.251.coolhousing.net