Robtex

Up: 203.233.84.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.233.85.0/25
Down right: 203.233.85.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.233.85.2	PTR	bestlifepartner.biz
203.233.85.2	PTR	ekyobo.biz
203.233.85.2	PTR	ikyobo.biz
203.233.85.4	PTR	daesan.org
203.233.85.4	PTR	daesan.or.kr
203.233.85.4	PTR	mail.daesan.org
203.233.85.5	A+PTR	mailtest.kyobo.co.kr
203.233.85.8	A	kyobostory.co.kr
203.233.85.8	A	kyobostory.com
203.233.85.20	A	mailbk1.kyobo.co.kr
203.233.85.21	A+PTR	ems.kyobo.co.kr
203.233.85.22	A+PTR	email.kyobo.co.kr
203.233.85.26	A+PTR	mail.kyobo.co.kr
203.233.85.26	PTR	mail.daesan.or.kr
203.233.85.26	A	mail.kyobolife.co.kr
203.233.85.28	A+PTR	mailbk2.kyobo.co.kr
203.233.85.29	A+PTR	shield.kyobo.com
203.233.85.29	A+PTR	shield.kyobo.co.kr
203.233.85.30	PTR	kyobobanca.com
203.233.85.30	PTR	kyobolaw.com
203.233.85.30	PTR	kyobobanca.net
203.233.85.39	A+PTR	shield2.kyobo.com
203.233.85.39	A+PTR	shield2.kyobo.co.kr
203.233.85.42	A+PTR	mobile1.kyoboezmore.co.kr
203.233.85.43	A+PTR	mobile2.kyoboezmore.co.kr
203.233.85.51	A+PTR	kezm.com
203.233.85.51	A+PTR	kezm.co.kr
203.233.85.51	A	loxealkorea.com
203.233.85.52	A+PTR	drmlog.kyobo.co.kr
203.233.85.52	A+PTR	kams.kyobocrm.com
203.233.85.60	A	ecrm.kyobo.co.kr
203.233.85.61	PTR	icwebsite.kyobo.co.kr
203.233.85.61	A+PTR	kcd.kyobo.co.kr
203.233.85.62	A+PTR	mail.kyobo.com
203.233.85.68	PTR	kyobocrm.com
203.233.85.68	PTR	kyoboga.com
203.233.85.68	PTR	kyobokiros.com
203.233.85.70	A	ems2.kyobo.co.kr
203.233.85.99	A+PTR	rsupport.kyobo.co.kr
203.233.85.108	A+PTR	ezf.kyoboezmore.co.kr
203.233.85.108	PTR	m.kyoboezmore.co.kr
203.233.85.108	PTR	secure.kyoboezmore.co.kr
203.233.85.111	PTR	kyoboezmore.co.kr
203.233.85.111	PTR	sslvpn.kyoboezmore.co.kr
203.233.85.120	PTR	kyobohrd.co.kr
203.233.85.120	A+PTR	banca.kyobo.co.kr
203.233.85.120	A+PTR	ecampus.kyobo.co.kr
203.233.85.121	A	kyo.bo