Robtex

Up: 137.189.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 137.189.168.0/22
Down right: 137.189.172.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
137.189.168.64	A+PTR	pc168064.cco.cuhk.edu.hk
137.189.168.99	A+PTR	pc168099.cco.cuhk.edu.hk
137.189.168.103	A	pc168103.cco.cuhk.edu.hk
137.189.168.104	A+PTR	pc168104.cco.cuhk.edu.hk
137.189.168.140	A	pc168140.cco.cuhk.edu.hk
137.189.168.151	A	pc168151.cco.cuhk.edu.hk
137.189.168.178	A+PTR	pc168178.cco.cuhk.edu.hk
137.189.168.185	A+PTR	pc168185.cco.cuhk.edu.hk
137.189.168.196	A	pc168196.cco.cuhk.edu.hk
137.189.169.92	A+PTR	iofc.grm.cuhk.edu.hk
137.189.169.104	PTR	sea.grm.chuk.edu.hk
137.189.169.104	A	sea.grm.cuhk.edu.hk
137.189.169.105	A+PTR	mail01.grm.cuhk.edu.hk
137.189.169.105	A	ns01.grm.cuhk.edu.hk
137.189.169.105	A	mail.grm.cuhk.edu.hk
137.189.169.107	PTR	spider.grm.cuhk.edu.hk
137.189.170.3	A+PTR	bpsucl.lib.cuhk.edu.hk
137.189.170.3	A	dnsucl.lib.cuhk.edu.hk
137.189.170.67	A	login.easyaccess2.lib.cuhk.edu.hk
137.189.170.67	A	easyaccess2.lib.cuhk.edu.hk
137.189.170.237	A	diva.lib.cuhk.edu.hk
137.189.171.88	A+PTR	udi.lib.cuhk.edu.hk
137.189.171.235	PTR	green.lib.cuhk.edu.hk
137.189.171.235	A	wes.sagepub.com.easyaccess1.lib.cuhk.edu.hk
137.189.171.235	A	easyaccess1.lib.cuhk.edu.hk
137.189.171.236	PTR	hkinchip.lib.cuhk.edu.hk
137.189.172.8	PTR	project.com.cuhk.edu.hk
137.189.172.8	A	www.com.cuhk.edu.hk
137.189.172.9	A+PTR	ftp.com.cuhk.edu.hk
137.189.172.9	A	www.cschinese.net
137.189.172.9	A	cschinese.com
137.189.172.10	PTR	com.cuhk.edu.hk
137.189.172.11	PTR	www.com.cuhk.edu.hk
137.189.172.17	A+PTR	ebooking.com.cuhk.edu.hk
137.189.173.215	A	pc173215.na.cuhk.edu.hk
137.189.173.232	A	pc173232.na.cuhk.edu.hk
137.189.173.238	A	pc173238.na.cuhk.edu.hk
137.189.173.239	A	pc173239.na.cuhk.edu.hk
137.189.174.176	A+PTR	pc174176.tra.cuhk.edu.hk
137.189.174.194	A+PTR	pc174194.tra.cuhk.edu.hk
137.189.174.205	A	registration.tra.cuhk.edu.hk
137.189.174.205	A	traserver.tra.cuhk.edu.hk
137.189.174.205	A	space.tra.cuhk.edu.hk
137.189.174.239	A+PTR	serverb.arts.cuhk.edu.hk
137.189.175.155	A+PTR	pmfe.lib.cuhk.edu.hk
137.189.175.158	A	ucl-1f-mfp1.lib.cuhk.edu.hk
137.189.175.163	A+PTR	ccl-gf-g2.lib.cuhk.edu.hk
137.189.175.209	A+PTR	ul-lg-mfpl1.lib.cuhk.edu.hk