Robtex

Up: 211.41.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 211.41.0.0/19
Down right: 211.41.32.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.41.4.34	PTR	ns2.igroupnet.co.kr
211.41.4.41	PTR	roadin.net
211.41.7.10	PTR	smtp.e-travel.co.kr
211.41.32.30	PTR	007job.com
211.41.32.30	PTR	007job.net
211.41.32.30	PTR	www.007job.com
211.41.35.10	PTR	mtmobile.co.kr
211.41.35.10	PTR	www.mtmobile.co.kr
211.41.35.11	PTR	mail.mtmobile.co.kr
211.41.41.250	A	hanjusoft.com
211.41.50.10	PTR	unhp.co.kr
211.41.50.10	A+PTR	mail.unhp.co.kr
211.41.50.10	A	www.unhp.co.kr
211.41.50.40	A	10kg.kr
211.41.51.253	PTR	daesung.com
211.41.51.253	PTR	mail.daesung.com
211.41.51.253	PTR	www.daesung.com
211.41.55.4	A	virobot.ktengcore.com
211.41.55.10	A	mail.ktengcore.com
211.41.58.194	A	netsan.net
211.41.58.194	A	sh.consumer.or.kr
211.41.60.1	PTR	woowondv.com
211.41.60.1	PTR	www.woowondv.com
211.41.60.3	PTR	dailyit.com
211.41.60.3	PTR	www.dailyit.com
211.41.60.46	A	mail.yesbnb.com
211.41.60.46	A	www.yesbnb.com
211.41.60.46	A	root.yesbnb.com
211.41.63.51	A	bioinformatics.pe.kr
211.41.63.51	A	www.bioinformatics.pe.kr
211.41.63.52	A	bioinfo.co.kr
211.41.63.53	A	bioinformatics.co.kr