Robtex

Up: 211.252.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 211.252.240.0/22
Down right: 211.252.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.252.246.22	A	mail.sbkid.kr
211.252.246.22	A	mail.kipe.org
211.252.246.22	A	mail.gotanji.kr
211.252.246.121	A	mail.dnl.kr
211.252.246.121	A	mail.wildernessresort.co.kr
211.252.246.121	A	mail.justicenews.kr
211.252.246.150	A	mail.dwyj.org
211.252.246.150	A	mail.kwnc.org
211.252.246.151	A	mail.xn--ok1b96hrsi33b.com
211.252.246.151	A	mail.carinaboat.com