Robtex

Up: 211.42.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 211.42.0.0/18
Down right: 211.42.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.42.8.144	A	mail.segiit.com
211.42.13.161	A	ems.kiscon.net
211.42.13.194	A	www.kiscon.net
211.42.13.194	A	kiscon.net
211.42.13.199	A	cws.kiscon.net
211.42.16.10	A	www.junggu.seoul.kr
211.42.16.10	A	ns2.junggu.seoul.kr
211.42.16.10	A	tour.junggu.seoul.kr
211.42.16.52	A	www.junggu.seoul.kr
211.42.16.52	A	tour.junggu.seoul.kr
211.42.16.63	A	ns2.junggu.seoul.kr
211.42.31.11	A	mailx.kocca.kr
211.42.31.11	A	mail.kbi.re.kr
211.42.31.11	A	mailx.kocca.or.kr
211.42.35.59	A	jd.ubiqos.co.kr
211.42.44.10	A	kama.go.kr
211.42.44.21	A	amo.kma.go.kr
211.42.44.21	A	kma-awo.go.kr
211.42.44.21	A	amo.go.kr
211.42.49.49	A	xhb211.com
211.42.72.10	A	ns.globalkoreamarket.go.kr
211.42.72.10	A	ns.sarok.go.kr
211.42.72.10	A	ns.pps.go.kr
211.42.72.210	A	ns2.g2b.go.kr
211.42.72.210	A	ns2.g2b.kr
211.42.72.210	A	ns2.sarok.go.kr
211.42.75.10	A	applet.g2b.go.kr
211.42.81.7	PTR	mail.kores.kr
211.42.81.7	A+PTR	mail.kores.or.kr
211.42.81.8	A+PTR	kmrgis.kr
211.42.81.8	A+PTR	kmrgis.net
211.42.81.8	A+PTR	kmrgis.or.kr
211.42.82.158	A	mail2.kores.or.kr
211.42.85.170	A	exms.g2b.go.kr
211.42.85.240	A	shopping.g2b.go.kr
211.42.85.240	A	g2b.kr
211.42.85.240	A	g2b.go.kr
211.42.87.80	A	boryeong-atc.com
211.42.87.80	A	djatc.or.kr
211.42.87.80	A	cnnongup.net
211.42.94.1	A	ns.chungnang.seoul.kr
211.42.94.4	A	manifesto.jn.go.kr
211.42.94.4	A	mail.chungnang.seoul.kr
211.42.94.23	A	jungnang.seoul.kr
211.42.98.7	A	mail.landmuseum.co.kr
211.42.98.10	A	smtp.lh.or.kr
211.42.98.10	A	smtp.lplus.or.kr
211.42.98.11	A	mail.lh.or.kr
211.42.100.143	A	oworld.kr
211.42.100.144	A	mail.dcco.kr