Robtex

Up: 211.223.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 211.223.208.0/21
Down right: 211.223.216.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.223.208.3	A+PTR	ns1.gu.ac.kr
211.223.208.3	A	ns1.gyeongju.ac.kr
211.223.208.3	A	ns1.gju.ac.kr
211.223.208.4	PTR	ns2.gu.ac.kr
211.223.208.16	A	gyeongju.ac.kr
211.223.208.16	A	gj.ac.kr
211.223.208.16	A	www.gu.ac.kr
211.223.208.23	PTR	mail.gu.ac.kr
211.223.208.24	PTR	spam.gu.ac.kr
211.223.219.254	A	ns3.kju.ac.kr