Robtex

Up: 211.50.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 211.50.128.0/18
Down right: 211.50.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.50.130.20	A	www.bugokcondo.net
211.50.130.20	A	bugokcondo.net
211.50.130.20	A	www.ilsungcondo.co.kr
211.50.135.162	A+PTR	mail.samwhapaper.com
211.50.135.162	A	mail.samwhacorp.com
211.50.135.162	A	mail.swp.co.kr
211.50.136.226	PTR	seni.net
211.50.136.226	PTR	seniweb.seni.net
211.50.136.247	A	spam.ajdyps.co.kr
211.50.137.200	A	*.ea.co.kr
211.50.138.50	PTR	aspnt.thezone4u.net
211.50.138.73	PTR	mail.thezone4u.net
211.50.144.66	A	dc1.woongil.co.kr
211.50.144.66	A	woongil.co.kr
211.50.144.67	A	woongil.co.kr
211.50.144.67	A	dc02.woongil.co.kr
211.50.144.68	A	woongil.co.kr
211.50.144.68	A	dc01.woongil.co.kr
211.50.148.3	A	mail.haniedu.co.kr
211.50.148.3	A	mail.ihani.co.kr
211.50.148.3	A	mail.csiet.net
211.50.148.8	A+PTR	virus.hani.co.kr
211.50.148.163	PTR	mail.edgc.com
211.50.149.132	PTR	mail.gw.dongshin-tech.com
211.50.149.132	PTR	mail.gw.dst-hi.com
211.50.149.132	PTR	mail.gw.dst-india.com
211.50.152.141	A	ns.anypress.com
211.50.153.61	A+PTR	ftp.solbi.com
211.50.153.61	A+PTR	mail.solbi.com
211.50.153.61	A	km.solbi.com
211.50.153.116	A	mail.daemyungresort.com
211.50.153.136	A	dmvaleon.co.kr
211.50.153.140	PTR	dev.dmlc.co.kr
211.50.153.140	PTR	dmlc.co.kr
211.50.153.140	PTR	www.dmlc.co.kr
211.50.156.8	PTR	gw.kukkiwon.or.kr
211.50.156.8	PTR	mail.kukkiwon.or.kr
211.50.169.104	PTR	mail.edailykorea.com
211.50.173.5	A	hostmaster.ibon.us
211.50.173.5	A	ibon.us
211.50.210.48	A	search.chollian.net
211.50.210.64	A	supp.simmani.com
211.50.237.117	A	www.falinux.com
211.50.237.118	A	nadia9.org
211.50.237.120	A	fsp21.org
211.50.237.121	A	ns1.kcert2018.com