Robtex

Up: 213.109.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 213.109.164.0/23
Down right: 213.109.166.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.109.164.1	A+PTR	smtpx01.stable.cz
213.109.164.5	PTR	5.164.109.213.in-addr.arpa
213.109.164.5	A	gsmcity.cz
213.109.164.11	A+PTR	danfileshop.stable.cz
213.109.164.11	A	dfprsteny.cz
213.109.164.11	A	www.dfprsteny.cz
213.109.164.12	PTR	srvb1.endora.cz
213.109.164.12	A	anaellebernier.com
213.109.164.12	A	honzakostka.com
213.109.164.20	A+PTR	mldesign.stable.cz
213.109.164.20	A	kvetinyfleur.cz
213.109.164.20	A	mldesign.cz
213.109.164.21	PTR	mail-smtp-out-04.stable.cz
213.109.164.22	PTR	bludicka.stable.cz
213.109.164.22	A	carnegietravelagency.cz
213.109.164.26	A+PTR	hopjump.stable.cz
213.109.164.26	A	hopjump.cz
213.109.164.26	A	www.hopjump.cz
213.109.164.45	A	ggr.cz
213.109.164.49	A+PTR	mki.stable.cz
213.109.164.49	A	lostexpeditionsgame.com
213.109.164.55	A+PTR	blacklist.stable.cz
213.109.164.62	A+PTR	explorio.stable.cz
213.109.164.62	A	www.explorio.cz
213.109.164.62	A	explorio.cz
213.109.164.84	PTR	fox.stable.cz
213.109.164.84	A	www.foxkot.com
213.109.164.107	PTR	smtpx122.stable.cz
213.109.164.108	A	ulovdomov.cz
213.109.164.121	A+PTR	rodina.stable.cz
213.109.164.132	A+PTR	liska2.stable.cz
213.109.164.132	A	www.nadovcu.cz
213.109.164.150	PTR	mavis.stable.cz
213.109.164.150	A	galvanotechna.cz
213.109.164.150	A	hvs.cz
213.109.164.160	A	libristo.stable.cz
213.109.164.164	A+PTR	matrace.stable.cz
213.109.164.164	A	matrace-grossmann.cz
213.109.164.189	A+PTR	smtpx16.stable.cz
213.109.164.242	A	nss.cz
213.109.165.32	A	toll-collect.sk
213.109.165.35	PTR	sp-ecomm-proxy.stable.cz
213.109.165.35	A	sportisimo.sk
213.109.165.35	A	sportisimo.cz
213.109.165.50	PTR	whitenet.ro
213.109.165.50	A	superhosting.jobs
213.109.165.88	PTR	whitenet.ro
213.109.165.88	A	sexystream.cz
213.109.165.160	PTR	smtpx11.stable.cz
213.109.166.50	A	korek.cz
213.109.166.112	PTR	112.166.109.213.in-addr.arpa
213.109.167.20	PTR	orlik.stable.cz
213.109.167.20	A	borabela.cz
213.109.167.20	A	weider-czech.cz
213.109.167.88	PTR	whitenet.ro
213.109.167.88	A	scit.cz