Robtex

Up: 203.237.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 203.237.240.0/22
Down right: 203.237.244.0/22

IP	Type	Hostname
203.237.240.2	A+PTR	center.dit.ac.kr
203.237.240.2	PTR	mail.dit.ac.kr
203.237.240.2	A	dit.ac.kr
203.237.240.21	PTR	www.dit.ac.kr
203.237.240.25	A	www.dit.ac.kr
203.237.240.38	A	mail.dit.ac.kr
203.237.240.205	A	bbs.dit.ac.kr
203.237.240.206	PTR	spam.dit.ac.kr.240.237.203.in-addr.arpa
203.237.240.206	A	spam.dit.ac.kr
203.237.240.207	A	spam2.dit.ac.kr
203.237.244.30	PTR	pasma.or.kr
203.237.244.35	A	psc.dit.ac.kr
203.237.244.150	A	oa.dit.ac.kr
203.237.246.242	A+PTR	dong.dit.ac.kr