Robtex

Up: 211.57.231.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 211.57.231.0/26
Down right: 211.57.231.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.57.231.5	A	bloodinfo.net
211.57.231.5	A	www.bloodinfo.net
211.57.231.11	A+PTR	mail.redcross.or.kr
211.57.231.12	A	mail.bloodinfo.net
211.57.231.13	A	ns.bloodinfo.net
211.57.231.13	A	ns.rcy.org
211.57.231.13	A	ns.redcross.or.kr
211.57.231.14	A	ns2.bloodinfo.net
211.57.231.14	A	ns2.redcross.or.kr
211.57.231.14	A	ns2.rcy.or.kr
211.57.231.16	A	ns.rcy.org
211.57.231.16	A	rcy.org
211.57.231.16	A	www.redcross.or.kr
211.57.231.74	A+PTR	spamsniper.redcross.or.kr