Robtex

Up: 121.50.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 121.50.0.0/18
Down right: 121.50.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.50.17.2	A	gsisuper.com
121.50.17.2	A	gseretail.com
121.50.17.2	A	www.isuper.net
121.50.18.82	A	gsretaildev.com
121.50.18.216	A	www.lfmallpartner.com
121.50.21.175	A+PTR	mail.lfmall.co.kr
121.50.21.175	A	mail.lgfashion.co.kr
121.50.21.175	A	mail.lfcorp.com
121.50.21.220	A	bensimonkorea.com
121.50.22.4	A	kmpay.lgcns.com
121.50.22.7	A	pg.cnspay.co.kr
121.50.22.8	A	cnspay.co.kr
121.50.22.8	A	www.cnspay.co.kr
121.50.22.223	A	www.misikilsang.com
121.50.25.23	A	gwmail.sni.co.kr
121.50.26.210	A	atxpert-bus.co.kr
121.50.26.210	A	www.atxpert-bus.co.kr
121.50.26.227	A	hwadamsup.com
121.50.28.27	A	audifs.co.kr
121.50.28.27	A	ducatifs.co.kr
121.50.28.27	A	www.vwfs.co.kr
121.50.29.8	A	gslbkr.lgcns.com
121.50.29.145	A	spms.co.kr
121.50.29.148	A	lgcic.com
121.50.29.153	A	serveone-cenyar.com
121.50.29.153	A	www.granseoul.co.kr
121.50.29.159	A	hwadamsup.com
121.50.30.72	A	www.serveone.vn
121.50.30.72	A	serveone.vn
121.50.30.77	A	serveonemwc.co.kr
121.50.30.80	A	spam.lgtoyo.com
121.50.30.203	A	www.epantos.com
121.50.30.235	A	spam.parnas.co.kr
121.50.33.146	A	mx.harindo.com
121.50.41.4	A	ns1.rise-com.jp
121.50.41.13	A	g-emedia.com
121.50.41.13	A	g-collect.net
121.50.41.87	PTR	deviser.co.jp
121.50.41.99	PTR	okodukai.jp
121.50.41.123	A	ns2.rise-com.jp
121.50.41.214	A	expressu-coupon.com
121.50.41.214	A	758ec.com
121.50.41.214	A	var-tool.com
121.50.42.5	A+PTR	2008-studio-q.tsukaeru.info
121.50.42.5	A	igyoshu.jp
121.50.42.5	A	www.igyoshu.jp
121.50.42.33	A	758ec.com
121.50.42.128	A	graphite-bungo.com
121.50.42.129	A+PTR	79322a81.brocks.jp
121.50.42.134	A	www.careersupport.jp
121.50.42.134	A	mail.careersupport.jp
121.50.42.136	PTR	j-capta.org
121.50.43.2	A	doi-mental.jp
121.50.43.3	A+PTR	79322b03.lakanda.com
121.50.43.3	A	c21-office.com
121.50.43.3	A	www.c21-office.com
121.50.43.129	PTR	superiorbrand-library.com
121.50.43.129	PTR	p17.jpnsv.com
121.50.43.129	A	mail.jane-love.jp
121.50.44.3	A	mail.aegisnetmail.com
121.50.44.3	A	aegisnetmail.com
121.50.44.10	PTR	79322c0a.addqr.info
121.50.44.10	A	mail.birthday-press.com
121.50.44.10	A	birthday-press.com
121.50.44.129	A	koike.ttt.vc
121.50.44.129	A	sunfields.jp
121.50.44.129	A	www.ttt.vc
121.50.44.132	PTR	quaris.jp
121.50.44.132	A	a-m-i-haken.com
121.50.44.133	PTR	79322c85.naganonabco.co.jp
121.50.45.8	PTR	tad-web.com
121.50.45.8	A	metinunsal.com
121.50.45.8	A	vianne.jp
121.50.45.11	PTR	mail.staffing-pros.com
121.50.45.12	PTR	betsujin.jp
121.50.45.131	A	implantlab.jp
121.50.45.131	A	mail.implantlab.jp
121.50.45.131	A	ns.implantlab.jp
121.50.45.132	A+PTR	sigyoubank.com
121.50.46.4	PTR	niigata-expand.com
121.50.46.4	PTR	kiryukensetsu.jp
121.50.46.4	PTR	niigatacoffee.jp
121.50.46.128	A	kekkonjyoho.com
121.50.46.128	A	uwaki.cc
121.50.46.128	A	affiliate1000.com
121.50.46.133	PTR	bb-cart5.net
121.50.47.7	A	mail.rice-communications.com
121.50.47.7	A	rice-communications.com
121.50.47.8	A	mail.shoes210.com
121.50.47.8	A	shoes210.com
121.50.47.133	A	osushiya.com
121.50.47.133	A	mail.osushiya.com
121.50.47.136	A	noboru007.com
121.50.47.136	A	mail.noboru007.com
121.50.48.11	A+PTR	rx11.smtp-vip1.foresightwave.net
121.50.48.11	A	mx.ix-layers.org
121.50.48.11	A	smtp.e-radio.co.jp
121.50.48.140	PTR	mmctube.com
121.50.48.144	A	mail.okukawa.co.jp
121.50.48.182	A	www.e-radio.co.jp
121.50.48.201	A	smtp2.e-radio.co.jp
121.50.50.20	A	smtp-asp0.foresightwave.net
121.50.50.20	A	mail.foresightwave.net
121.50.50.57	A	smtp-asp7.smtp-gw0.foresightwave.net
121.50.50.70	A	smtp-asp0.smtp-gw1.foresightwave.net
121.50.51.173	A	computerservice.co.jp
121.50.52.21	A	smtp-asp1.foresightwave.net
121.50.52.22	A	smtp-asp2.foresightwave.net
121.50.52.23	A	smtp-asp3.foresightwave.net
121.50.52.51	A	ns1.foresightwave.com
121.50.53.129	PTR	121050053129.cidr.biwakobb.net
121.50.55.11	A	mail.nagiko-made.com
121.50.55.11	A	nagiko-made.com
121.50.55.11	A	mail.randynetwork.com
121.50.56.14	A+PTR	mrbm13.mrs.mpub.ne.jp
121.50.56.62	A+PTR	mrbm-12-3.mrs.mpub.ne.jp
121.50.57.1	A	kids.tokyo-shoseki.co.jp
121.50.57.2	A	touken.tokyo-shoseki.co.jp
121.50.57.3	A	estate.tokyo-shoseki.co.jp
121.50.57.12	A	www.tosho-bunko.jp
121.50.57.138	A	dih-nc.e-kakushin.com
121.50.57.139	A	pcsafety.secomtrust.net
121.50.57.142	A	ds-nc.e-kakushin.com
121.50.57.149	A	www.ekoufu.jp
121.50.58.14	A	crnt.e-kakushin.com
121.50.58.21	A	kansei.e-kakushin.com
121.50.58.72	A	epk.e-kakushin.com
121.50.58.73	A	epw.e-kakushin.com
121.50.58.135	A	www.kaboo.co.jp
121.50.58.136	A	mobile.kaboo.co.jp
121.50.58.142	A	www.saigaishienjutaku.com
121.50.58.153	A	enetcom.co.jp
121.50.59.0	PTR	121-50-59-0.secomtrust.net
121.50.59.1	A	121-50-59-1.secomtrust.net
121.50.59.9	A	121-50-59-9.secomtrust.net
121.50.59.14	A	121-50-59-14.secomtrust.net
121.50.59.16	A	121-50-59-16.secomtrust.net
121.50.59.130	A+PTR	121-50-59-130.secomtrust.net
121.50.59.130	A	traderswebfx.jp
121.50.59.131	A	121-50-59-131.secomtrust.net
121.50.59.140	A	121-50-59-140.secomtrust.net
121.50.60.14	A+PTR	121-50-60-14.secomtrust.net
121.50.61.14	A+PTR	121-50-61-14.secomtrust.net
121.50.62.0	PTR	121-50-62-0.secomtrust.net
121.50.62.1	A	121-50-62-1.secomtrust.net
121.50.62.10	A	soam.co.jp
121.50.62.10	A	www.soam.co.jp
121.50.62.13	A	ya-man.jp
121.50.62.26	A	ya-man.jp
121.50.62.134	A	www.onlyminerals.jp
121.50.62.134	A	onlyminerals.jp
121.50.62.135	A	www.fj-ffs.jp
121.50.62.135	A	fj-ffs.jp
121.50.62.155	A	www.onlyminerals.jp
121.50.62.155	A	onlyminerals.jp
121.50.63.0	PTR	121-50-63-0.secomtrust.net
121.50.63.7	A	www.recroad.net
121.50.63.7	A	recroad.net
121.50.63.8	A	www.japan-drive-it.co.jp
121.50.63.11	A	eki-net.biz
121.50.63.135	A	trbiz.jp
121.50.63.157	A	www.881506.com
121.50.63.159	A	plass.secom.jp
121.50.63.173	A	mail1.kaboo.co.jp