Robtex

Up: 211.175.82.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 211.175.82.0/25
Down right: 211.175.82.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.175.82.60	PTR	exstmp.koscom.co.kr
211.175.82.60	A	exsmtp.koscom.co.kr
211.175.82.65	PTR	ns2.koscom.co.kr
211.175.82.66	PTR	ns.koscom.co.kr
211.175.82.66	A	mail.koscom.co.kr
211.175.82.69	A	www2.koscom.co.kr
211.175.82.86	A	spam.itkoscom.co.kr
211.175.82.86	A	spam.koscom.co.kr
211.175.82.87	A	spam2.koscom.co.kr
211.175.82.100	A	ns.koscomisac.com
211.175.82.100	A	itkoscom.co.kr
211.175.82.100	A	ns.fsisac.info
211.175.82.212	A+PTR	mail2.koscom.co.kr
211.175.82.213	A+PTR	mail3.koscom.co.kr