Robtex

Up: 211.191.180.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 211.191.181.0/25
Down right: 211.191.181.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.191.181.13	A+PTR	webmail.msd-korea.com
211.191.181.17	PTR	ns.dreamsea.co.kr
211.191.181.17	A	denticare.co.kr
211.191.181.17	A	nady.co.kr
211.191.181.18	A+PTR	mail.mdfaculty.com
211.191.181.18	A	xn--3e0b48lu7l16cjc646j.com