Robtex

Up: 220.231.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 220.231.32.0/20
Down right: 220.231.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.231.32.12	A+PTR	mail.ghidc.net
220.231.32.12	A	ghidc.net
220.231.32.20	A	bjgvpn.coherent.com
220.231.32.50	A	www.readchina.com
220.231.32.50	A	readchina.com
220.231.32.50	A	bjnse.com
220.231.32.68	A	ns1.addomain.info
220.231.32.68	A	ns2.addomain.info
220.231.32.69	A	dilato-exs.dilatoit.com
220.231.32.69	A	email.dilatoit.com
220.231.33.68	A	advantechfund.com
220.231.33.68	A	redviewcap.com
220.231.33.75	A+PTR	spam.nhfund.com
220.231.33.75	A	*.hnys.net
220.231.33.242	PTR	mail.amica.com.cn
220.231.33.242	A	mail.cosmoinkjet.com.cn
220.231.33.242	A	mail.yameikechina.com
220.231.34.180	A	eocean.cn
220.231.34.226	A	cbitway.cn
220.231.36.69	A	duiwaihanyu.net
220.231.37.6	A+PTR	m.russia.org.cn
220.231.37.204	A	www.hokudai.cn
220.231.37.204	A	hokudai.cn
220.231.38.28	A	www.cape.ac.cn
220.231.38.84	A	rxzq.net
220.231.38.212	A	www.sh-ticket.com
220.231.38.222	A	www.263g.com
220.231.38.222	A	263g.com
220.231.40.197	PTR	mail.orientalexpo.net
220.231.41.66	A	mx.efchina.org
220.231.41.77	A	ns.ied.cn
220.231.41.105	A	ids.csteelnews.com
220.231.41.107	A	www.uniflows.com
220.231.41.107	A	uniflows.com
220.231.41.107	A	mail.yxhtcg.com
220.231.41.194	A	ns.chinatex.net
220.231.41.194	A	ns.chinatex.com
220.231.41.195	A	ns3.chinatex.com
220.231.41.197	PTR	mx1.chinatex.com
220.231.41.198	PTR	mail.chinatex.com
220.231.41.198	A	mx5.chinatex.net
220.231.41.199	PTR	mx2.chinatex.com
220.231.41.231	A	mail3.chinatex.com
220.231.41.231	A	mail3.chinatex.net
220.231.41.247	A	filter.chinatex.net
220.231.42.11	A+PTR	mail.asdc.com.cn
220.231.42.23	A	bmschina.net
220.231.43.3	A	xn--fiq15sr9nuy8b.com
220.231.43.3	A	www.sinoma.cn
220.231.43.4	PTR	mail.sinoma-ltd.cn
220.231.43.4	A+PTR	mail.sinoma.cn
220.231.43.4	A	mail.sinomatech.com
220.231.43.20	PTR	mail.sinoma.cn
220.231.43.100	PTR	mx-0.efchina.org
220.231.43.244	A	celercoo.com
220.231.44.251	A+PTR	mail.careerintlinc.com
220.231.44.251	PTR	mail.careerrpo.com
220.231.44.251	A+PTR	mail.chinacareer.com
220.231.46.125	A	ns.nim.org.cn
220.231.47.162	A	lc1.jsfund.cn
220.231.48.170	A	brandchina.org
220.231.48.170	A	nationsart.com
220.231.48.170	A	ohhalf.com
220.231.49.130	A	mail.daesang.cn
220.231.49.235	A	sinoma.cn
220.231.49.235	A	sinoma-ltd.cn
220.231.49.235	A	dns.sinoma.cn
220.231.52.18	A	mail.gsgc.cn
220.231.52.18	A	email.gsgc.cn
220.231.52.18	A	gsgc.cn
220.231.52.23	A	mail.jinzeteam.com
220.231.52.41	A	gsgc.com
220.231.52.41	A	*.gsgc.com
220.231.52.41	A	outlookweb.gsgc.com
220.231.52.133	A	mail.petsun.cn
220.231.52.133	A	mail.diaoshi.net
220.231.52.133	A	mailserver.contact4me.net
220.231.53.162	A	careertempstaffing.com
220.231.53.167	A	www.rpo.cn
220.231.53.200	PTR	ns6.camic.cn
220.231.53.221	PTR	ns8.camic.cn
220.231.54.115	A	mail.escasys.com
220.231.54.237	A	renzhongren.com
220.231.54.237	A	poczta.agitor.pl
220.231.54.237	A	mail.renzhongren.com
220.231.54.250	A	mail.mvm.cn
220.231.55.35	A	honkles.com
220.231.55.75	A	ethdigi.com
220.231.55.98	A+PTR	email.nim.ac.cn
220.231.55.99	PTR	email.nim.ac.cn
220.231.57.131	A	bcl.com.cn
220.231.61.8	PTR	mx7.17hz.net
220.231.61.8	A	mail.hysbio.com
220.231.61.39	A	www.cabrcc.com.cn
220.231.61.50	A	mail.lybaile.net
220.231.62.231	PTR	mail.cww.net.cn
220.231.62.234	A	mail.joconline.cn
220.231.63.10	A+PTR	abuse.sinnet.com.cn
220.231.63.162	A	ibta.com.cn
220.231.63.162	A	*.famory.com
220.231.63.162	A	ibta.cn