Robtex

Up: 203.255.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.255.48.0/21
Down right: 203.255.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.255.48.91	A+PTR	msjoun.gnu.ac.kr
203.255.48.97	A	ma.gsnu.ac.kr
203.255.48.231	A	acml.gsnu.ac.kr
203.255.51.239	A	marine.gnu.ac.kr
203.255.53.52	A+PTR	syscon.gsnu.ac.kr
203.255.53.52	A	syscon.gnu.ac.kr
203.255.53.177	A	cae.gsnu.ac.kr
203.255.56.53	A	yonwi.com
203.255.56.53	A	makhtar.ddns.net
203.255.56.53	A	softensys.com
203.255.57.135	A	dslab.gsnu.ac.kr
203.255.62.128	A	bsj.gsnu.ac.kr
203.255.62.253	A	busokgo.gsnu.ac.kr
203.255.63.135	PTR	ehs2.gnu.kr
203.255.63.135	PTR	ehs2.gsnu.kr
203.255.63.135	PTR	ehs2.gnu.ac.kr