Robtex

Up: 210.181.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 210.181.80.0/21
Down right: 210.181.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.181.92.5	PTR	jejucvb.or.kr
210.181.92.5	PTR	jejumice.or.kr
210.181.92.5	A	mail.jejucvb.or.kr
210.181.92.9	PTR	ikukbo.com
210.181.92.9	A	mail.ikukbo.com
210.181.92.27	A	mail.sdf.seoul.kr
210.181.92.33	A+PTR	mail.gyri.re.kr
210.181.92.41	A+PTR	mail.aimhigh-g.com
210.181.92.54	PTR	kpcqa.or.kr
210.181.92.54	A	mail.kpcqa.or.kr
210.181.92.59	PTR	gcci.or.kr
210.181.92.59	A	mail.gcci.or.kr
210.181.92.62	PTR	kpcqa.or.kr
210.181.92.78	PTR	nsic.co.kr
210.181.92.78	A	mail.songdopmc.com
210.181.92.78	A	mail.nsic.co.kr
210.181.92.88	PTR	mail.wcf.or.kr
210.181.92.92	A	mail.gnsports.or.kr
210.181.92.93	A	mail.ppsseed.co.kr
210.181.92.117	A+PTR	smf.ikukbo.com
210.181.92.126	A+PTR	smf.vt-cosmetics.com
210.181.92.129	A	mail.pneinnotec.com
210.181.92.131	A+PTR	smf.pnesolution.com
210.181.92.160	A	mail.hollyscoffee.com
210.181.92.183	A	mail.yuhancare.com
210.181.92.196	A	webmail.igbf.kr
210.181.92.224	PTR	airportmc.co.kr
210.181.92.224	A	gw.airportmc.co.kr
210.181.93.72	A	www.haatz.com
210.181.93.138	A+PTR	spamout.mediquitous.com
210.181.93.138	A	spamout.clotty.co.kr
210.181.93.138	A	spamout.jungsamgwan.co.kr
210.181.93.169	PTR	wblock.inbiogen.co.kr
210.181.93.237	A	mail.polaris-shipping.com
210.181.94.3	A	sfilter.hanilcarpet.co.kr
210.181.94.5	PTR	mail.n-line.co.kr
210.181.94.5	A	mail.hnceng.com
210.181.94.5	A	mail.izukorea.com
210.181.94.8	A	mail.taeshinwt.com
210.181.94.22	A	mail.pmd.co.kr
210.181.94.29	A	psmsolution.com
210.181.94.31	PTR	mail.kgpa.or.kr
210.181.94.33	A	intra.sspharm.co.kr
210.181.94.33	A	mail.sspharm.co.kr
210.181.94.33	A	intangible.sspharm.co.kr
210.181.94.40	A	sis.sspharm.co.kr
210.181.94.42	PTR	mail.daiwha.com
210.181.94.44	PTR	mail.futurechem.co.kr
210.181.94.50	A	d-top.co.kr
210.181.94.53	A+PTR	mail.emro.co.kr
210.181.94.56	A	mail.imineskin.com
210.181.94.57	A	www.hnceng.com
210.181.94.130	A	mail.hanapw.com
210.181.94.133	A+PTR	mail.i-zen.net
210.181.94.138	A	www.nst.re.kr
210.181.94.138	A	gri-works.com
210.181.94.151	PTR	poongjeon.net
210.181.94.151	A	mail.poongjeon.net
210.181.94.155	A	ns.corecross.com
210.181.94.155	A	corecross.com
210.181.94.159	PTR	ysgren.com
210.181.94.159	A+PTR	mail.ysgren.com
210.181.94.163	PTR	mail.woogenebng.com\032
210.181.94.163	A	mail.woogenebng.com
210.181.94.165	PTR	medihealcos.com
210.181.94.165	A	mail.makeheal.com
210.181.94.165	A	mail.mei-road.com
210.181.94.170	PTR	andyndebb.com
210.181.94.181	A+PTR	gw.fnguide.com
210.181.94.184	PTR	energium.com
210.181.94.184	A+PTR	gwmail.energium.com
210.181.94.189	A	www.sunjinsa.co.kr
210.181.94.190	PTR	sam-ick.co.kr
210.181.94.190	A	mail.sam-ick.co.kr
210.181.94.192	A+PTR	mail.seobo.co.kr
210.181.94.193	A	mail.iljinrad.co.kr
210.181.94.194	A	mail.wfoodmarket.co.kr
210.181.94.196	A	mail.gwtp.or.kr
210.181.94.211	PTR	daewon.co.kr
210.181.94.211	A	mail.chabon.co.kr
210.181.94.211	A	mail.thecubeplus.com
210.181.94.222	A	mail.across.kr
210.181.94.228	A	mail.ilovesignal.co.kr
210.181.94.228	A	ilovesignal.co.kr
210.181.94.229	PTR	mail.sicis.co.kr
210.181.94.229	PTR	smf.sicis.co.kr
210.181.94.229	A	spam.ilovesignal.co.kr
210.181.94.246	A	mail.win-plus.co.kr
210.181.94.247	PTR	bolidal.com
210.181.94.247	PTR	biologdevice.com
210.181.94.247	A	mail.biologdevice.com
210.181.94.253	A	mail.posen.co.kr
210.181.94.253	A	ep.posen.co.kr