Robtex

Up: 42.123.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 42.123.64.0/21
Down right: 42.123.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
42.123.65.44	A	*.3158.com.3158.cn
42.123.65.44	A	*.com.3158.cn
42.123.65.154	A	josscy.vicp.cc
42.123.69.11	A	cnctf.net
42.123.69.59	A	hstdxhqy.csc108.com
42.123.70.59	A	nm2189cloud.oos-nm2.ctyunapi.cn
42.123.70.59	A	www.173.me.oos-nm2.ctyunapi.cn
42.123.70.59	A	www.173.me
42.123.70.71	A	www.ctyxy.cn
42.123.72.94	A	tumeiti.com
42.123.72.134	A	imap.chinaccs.cn
42.123.72.135	A	mta.chinaccs.cn
42.123.72.182	A	chinaccs.cn
42.123.72.183	A	chinaccs.cn
42.123.72.186	A	www.chinaccs.cn
42.123.72.186	A	www.chinaccs.com.cn
42.123.76.8	A	dl.800.21cn.com
42.123.76.10	A	storebatteries.com
42.123.76.10	A	mygica.cn
42.123.76.52	A	open.e-189.21cn.com
42.123.76.60	A	xbmcloud.com
42.123.76.70	A	tiptech.com.cn
42.123.76.70	A	www.tiptech.com.cn
42.123.76.75	A	open.e-189.21cn.com
42.123.76.80	A	api.fg.21cn.com
42.123.76.80	A	fg.21cn.com
42.123.76.87	A	open.e-189.21cn.com
42.123.76.89	A	www.hhhtbtjc.com
42.123.76.97	A	yjt.189.cn
42.123.76.125	A	smarthome.189.cn
42.123.76.130	A	ad.k.21cn.com
42.123.76.154	A	flight.118114.cn
42.123.76.171	A	recruit.21cn.com
42.123.76.176	A	yijitongoa.com
42.123.76.201	A	testmail.chinatelecom.com.cn
42.123.76.201	A	oa-imap.21cn.net
42.123.76.201	A	oa-mta.21cn.net
42.123.76.202	A	testmail.chinatelecom.com.cn
42.123.76.202	A	oa-imap.21cn.net
42.123.76.202	A	oa-mta.21cn.net
42.123.76.203	A	oa-pop.21cn.net
42.123.76.204	A	oa-pop.21cn.net
42.123.76.210	A	oa-mail.21cn.net
42.123.76.211	A	oa-mail.21cn.net
42.123.76.213	A	corp.forptr.21cn.com
42.123.76.219	A	oa-prtmail.21cn.net
42.123.76.220	A	oa-prtmail.21cn.net
42.123.76.221	A	oa-prtmail.21cn.net
42.123.76.222	A	oa-prtmail.21cn.net
42.123.76.223	A	oa-prtmail.21cn.net
42.123.76.224	PTR	prt-mail.chinatelecom.cn
42.123.76.224	A	oa-prtmail.21cn.net
42.123.76.225	A	oa-prtmail.21cn.net
42.123.76.226	PTR	prt-mail.chinatelecom.cn
42.123.76.226	A	oa-prtmail.21cn.net
42.123.76.227	PTR	prt-mail.chinatelecom.cn
42.123.76.227	A	oa-prtmail.21cn.net
42.123.76.228	A	oa-prtmail.21cn.net
42.123.76.229	A	oa-prtmail.21cn.net
42.123.76.230	A	oa-prtmail.21cn.net
42.123.76.231	A	oa-prtmail.21cn.net
42.123.76.232	A	oa-prtmail.21cn.net
42.123.77.15	A	push.21cn.com
42.123.77.20	A	sec.tech.21cn.com
42.123.77.22	A	win.800-189.21cn.com
42.123.77.22	A	800.21cn.com
42.123.77.22	A	ll.21cn.com
42.123.77.59	A	push.21cn.com
42.123.77.66	A	collect.ux.21cn.com
42.123.77.66	A	ux.21cn.com
42.123.77.105	A	app.fg.21cn.com
42.123.77.105	A	open.fg.21cn.com
42.123.77.105	A	llk.21cn.com
42.123.77.111	A	blparking.com
42.123.77.185	A	ppsaleman.com
42.123.77.190	A	fg.vip.21cn.com
42.123.77.201	A	fg.vip.21cn.com
42.123.77.218	A	hotel.118114.cn
42.123.77.218	A	katy-photography.com
42.123.77.240	A	mail.wushubin.com
42.123.77.241	A	sensor.tech.21cn.com