Robtex

Up: 203.249.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.249.84.0/23
Down right: 203.249.86.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.249.84.2	PTR	recruit.hongik.ac.kr
203.249.84.109	PTR	hicho109.hongik.ac.kr
203.249.84.209	A	cdns.hongik.ac.kr
203.249.84.211	PTR	main.hongik.ac.kr
203.249.84.212	PTR	archive.hongik.ac.kr
203.249.84.220	PTR	cgi.hongik.ac.kr
203.249.84.220	PTR	heli.hongik.ac.kr
203.249.84.223	A	won.hongik.ac.kr
203.249.84.238	A+PTR	center.hongik.ac.kr
203.249.84.242	A+PTR	ccw.hongik.ac.kr
203.249.84.246	PTR	info.hongik.ac.kr
203.249.84.246	A+PTR	shinan.hongik.ac.kr
203.249.84.246	A	hbn.hongik.ac.kr
203.249.85.216	PTR	netmedia.hongik.ac.kr
203.249.86.7	PTR	cer.hongik.ac.kr
203.249.86.254	PTR	zylan-86.hongik.ac.kr
203.249.87.4	PTR	elecom.hongik.ac.kr
203.249.87.93	PTR	ece.hongik.ac.kr
203.249.87.107	PTR	risl.hongik.ac.kr
203.249.87.239	A	mx.cdsuser.net
203.249.87.239	A	cdsuser.net
203.249.87.253	PTR	zylan-87.hongik.ac.kr