Robtex

Up: 203.242.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 203.242.120.0/22
Down right: 203.242.124.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.242.127.71	A+PTR	mail2.skc.co.kr
203.242.127.71	PTR	mail1.skc.co.kr
203.242.127.72	A	mail.skc.co.kr
203.242.127.72	A	mail.skc.kr
203.242.127.72	A	spam.skc.co.kr
203.242.127.74	PTR	mail.skcairgas.co.kr
203.242.127.74	PTR	mail.biolandkorea.com
203.242.127.74	PTR	mail.skcairgas.com
203.242.127.75	PTR	skclighting.com
203.242.127.86	A	mail.skc-haas.com
203.242.127.89	A	www.skbioland.com
203.242.127.89	A	skc.co.kr
203.242.127.89	A	skbioland.com