Robtex

Up: 49.50.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 49.50.24.0/22
Down right: 49.50.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
49.50.24.59	A	sse2000.com
49.50.24.97	A	mail.sonicbrain-g.com
49.50.26.34	A	ns.perceptcom.com
49.50.26.34	A	ns2.perceptcom.com
49.50.26.77	A+PTR	mail.gis21.co.kr
49.50.26.77	A	knoucs.com
49.50.26.77	A	gis21.co.kr
49.50.28.27	A	sysclone.com
49.50.28.27	A	vitechkorea.com
49.50.31.1	PTR	ns1.raynet.kr
49.50.31.1	A	ns3.goraynet.kr
49.50.31.2	A+PTR	mail.raynet.kr
49.50.31.2	A+PTR	ns2.raynet.kr
49.50.31.2	A	ns4.goraynet.kr
49.50.31.3	PTR	mxm.raynet.co.kr
49.50.31.211	A	test.raynet.kr
49.50.31.214	A	ns6.goraynet.co.kr