Robtex

Up: 211.47.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 211.47.224.0/20
Down right: 211.47.240.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.47.224.34	PTR	static.211-47-224-34.nexg.net
211.47.224.64	PTR	static.211-47-224-64.nexg.net
211.47.224.66	PTR	static.211-47-224-66.nexg.net
211.47.224.96	PTR	static.211-47-224-96.nexg.net
211.47.224.161	PTR	static.211-47-224-161.nexg.net
211.47.224.193	PTR	static.211-47-224-193.nexg.net
211.47.225.2	PTR	static.211-47-225-2.nexg.net
211.47.225.6	A	www.edsk.co.kr
211.47.225.8	A	mail.edsk.co.kr
211.47.225.66	PTR	mail.insideoptics.com
211.47.226.32	PTR	211-47-226-32.nexg.net
211.47.226.66	A+PTR	mail.amchamkorea.org
211.47.226.67	PTR	211-47-226-67.amchamkorea.org
211.47.226.227	PTR	211-47-226-227.nexg.net
211.47.227.82	A	khei.com
211.47.227.82	A	www.khei.com
211.47.227.105	A	chosunhotelbakery.com
211.47.227.194	PTR	static.211-47-227-194.nexg.net
211.47.227.226	PTR	static.211-47-227-226.nexg.net
211.47.229.160	PTR	static.211-47-229-160.nexg.net
211.47.231.130	PTR	static.211-47-231-130.nexg.net
211.47.231.130	A	incns.inctech.co.kr
211.47.231.130	A	*.inctech.co.kr
211.47.232.64	PTR	static.211-47-232-64.nexg.net
211.47.232.70	A	ns2.seamails.net
211.47.232.87	A	investorunited.co.kr
211.47.232.87	A	landmarkline.com
211.47.232.87	A	hanaroshipping.com
211.47.232.141	A	mail.dmon.co.kr
211.47.233.96	PTR	static.211-47-233-96.nexg.net
211.47.234.33	PTR	static.211-47-234-33.nexg.net
211.47.234.96	PTR	static.211-47-234-96.nexg.net
211.47.234.97	PTR	static.211-47-234-97.nexg.net
211.47.234.98	PTR	static.211-47-234-98.nexg.net
211.47.234.161	PTR	static.211-47-234-161.nexg.net
211.47.234.163	PTR	static.211-47-234-163.nexg.net
211.47.238.4	PTR	static.211-47-238-4.nexg.net
211.47.238.10	A	mail.limited40.com
211.47.238.82	A	mailmetal.nodong.org
211.47.238.82	A	metalunion.kr
211.47.238.82	A	kmwu.kr
211.47.238.90	A	metalunion.kr
211.47.239.32	PTR	static.211-47-239-32.nexg.net