Robtex

Up: 123.255.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 123.255.64.0/22
Down right: 123.255.68.0/22

IP	Type	Hostname
123.255.64.2	A	ns.keep.edu.hk
123.255.64.6	A	cuhkjc-aiforfuture.hk
123.255.64.6	A	www.cuhkjc-aiforfuture.hk
123.255.64.7	A	www.keep.edu.hk
123.255.64.78	A	u-stemhk.net
123.255.64.83	A	ureply.mobi
123.255.64.87	A	www.mcuhk.com
123.255.65.2	PTR	vcmgt.itsc.cuhk.edu.hk
123.255.65.11	PTR	ucsadm.itsc.cuhk.edu.hk
123.255.65.12	A+PTR	cpve03.itsc.cuhk.edu.hk
123.255.65.15	A	cpve06.itsc.cuhk.edu.hk
123.255.65.16	PTR	cpve07.itsc.cuhk.edu.hk
123.255.65.22	PTR	ucsb15.itsc.cuhk.edu.hk
123.255.65.24	PTR	cpve02.itsc.cuhk.edu.hk
123.255.65.36	A	ucsb09.itsc.cuhk.edu.hk
123.255.65.38	A+PTR	www.gaia.cuhk.edu.hk
123.255.65.44	PTR	www.chineseupress.com
123.255.65.45	A+PTR	www.alumnitrail.alumni.cuhk.edu.hk
123.255.65.46	A+PTR	www.scm.cuhk.edu.hk
123.255.65.46	A	scm.cuhk.edu.hk
123.255.65.64	PTR	www.iso.cuhk.edu.hk
123.255.65.65	A+PTR	db.iso.cuhk.edu.hk
123.255.65.67	PTR	vm2.per.cuhk.edu.hk
123.255.65.68	A	afed1a.hkaf.edu.hk
123.255.65.68	A	hkpisa.cuhk.edu.hk
123.255.65.69	A	www.gss.cuhk.edu.hk
123.255.65.75	A	cmsdev3.itsc.cuhk.edu.hk
123.255.65.78	A	mmlab5-2.itsc.cuhk.edu.hk
123.255.65.78	A	www.lihs.cuhk.edu.hk
123.255.65.80	A+PTR	eltu.cuhk.edu.hk
123.255.65.91	A	aic-server2.aic.cuhk.edu.hk
123.255.65.93	A	mailserv.cuhk.edu.cn
123.255.65.115	A	mmlab5.itsc.cuhk.edu.hk
123.255.65.115	A	www2.cuhk.edu.hk
123.255.65.119	A	ivfhk.com
123.255.65.119	A	www.ivfhk.com
123.255.65.125	A	www.chineseupress.com
123.255.65.127	A	aic-server4.aic.cuhk.edu.hk
123.255.65.127	A	www.intensive-care-monitor.hk
123.255.65.127	A	www.aic.cuhk.edu.hk
123.255.65.129	A+PTR	www2.ccrb.cuhk.edu.hk
123.255.65.129	A	www.cct.cuhk.edu.hk
123.255.65.136	A+PTR	cadenza.med.cuhk.edu.hk
123.255.65.136	A	www.cadenza.hk
123.255.65.139	A	vm3.per.cuhk.edu.hk
123.255.65.145	A+PTR	www.cpr.cuhk.edu.hk
123.255.65.145	A	cpr.cuhk.edu.hk
123.255.65.151	A+PTR	theology.cuhk.edu.hk
123.255.65.151	PTR	ns1.theology.cuhk.edu.hk
123.255.65.151	A	mail.theology.cuhk.edu.hk
123.255.65.157	A+PTR	srvweb1-law.law.cuhk.edu.hk
123.255.65.164	A+PTR	svm-web.lib.cuhk.edu.hk
123.255.65.164	A	lib.cuhk.edu.hk
123.255.65.166	A+PTR	svm-web-virtual.lib.cuhk.edu.hk
123.255.65.166	A	www.hkcan.net
123.255.65.172	A	www.chi1993.cuhk.edu.hk
123.255.65.178	A	www.obg.cuhk.edu.hk
123.255.65.185	A+PTR	www.jcafc.hk
123.255.65.185	A	jcafc.hk
123.255.65.186	A	www.aemau.cuhk.edu.hk
123.255.65.188	A	dev1.clapforyouth.org.hk
123.255.65.208	PTR	drum.itsc.cuhk.edu.hk