Robtex

Up: 211.41.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 211.41.96.0/20
Down right: 211.41.112.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.41.100.98	PTR	smf.snse.co.kr
211.41.100.98	A+PTR	smf.unipoint.co.kr
211.41.100.100	A	unimail.unipoint.co.kr
211.41.100.101	A+PTR	umail.unipoint.co.kr
211.41.100.105	A	mail.unipointpoc.com
211.41.108.148	A	speakingncall.com
211.41.109.57	A	smatouch.com
211.41.109.67	A	mail.coreplan.com
211.41.109.67	A	mail.scnj.co.kr
211.41.123.2	A+PTR	ns.suheung.com
211.41.123.2	A	ns.suheung.kr
211.41.123.2	A	ns.geltech.co.kr
211.41.123.6	PTR	spamfilter.suheung.co.kr
211.41.123.16	PTR	mail.suheung.com