Robtex

Up: 211.239.174.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 211.239.174.0/25
Down right: 211.239.174.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.239.174.1	A+PTR	spam.dtc.co.kr
211.239.174.3	A+PTR	file.dtc.co.kr
211.239.174.3	A+PTR	mail.dtc.co.kr
211.239.174.3	PTR	dtc.co.kr
211.239.174.9	A	www.dtc.co.kr
211.239.174.10	A	android.dtc.co.kr
211.239.174.20	A+PTR	maerong.co.kr
211.239.174.20	A	ns.maerong.co.kr