Robtex

Up: 137.189.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 137.189.164.0/23
Down right: 137.189.166.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
137.189.164.1	A+PTR	dns2.fed.cuhk.edu.hk
137.189.164.2	A+PTR	e3000.fed.cuhk.edu.hk
137.189.164.2	A	www.fed.cuhk.edu.hk
137.189.164.73	PTR	caite.fed.cuhk.edu.hk
137.189.164.73	A	farmtasia.net
137.189.164.81	A+PTR	hkier.fed.cuhk.edu.hk
137.189.164.84	PTR	serverm-edu.edu4.local
137.189.164.91	PTR	pc164091.fed.cuhk.edu.hk
137.189.164.91	A	farmtasia.net
137.189.164.91	A	www.ev-cuhk.net
137.189.164.114	PTR	pc164114.fed.cuhk.edu.hk
137.189.164.122	A+PTR	uapp2.fed.cuhk.edu.hk
137.189.164.123	A+PTR	dns1.fed.cuhk.edu.hk
137.189.164.154	A	mail.learningvillages.net
137.189.164.164	A+PTR	c100.fed.cuhk.edu.hk
137.189.164.185	A+PTR	dataforce.fed.cuhk.edu.hk
137.189.164.190	PTR	ledblog.fed.cuhk.edu.hk
137.189.164.190	A	plate.fed.cuhk.edu.hk
137.189.164.201	PTR	pc164201.fed.cuhk.edu.hk
137.189.164.217	A+PTR	pc164217.fed.cuhk.edu.hk
137.189.165.62	A+PTR	pc165062.fed.cuhk.edu.hk
137.189.165.62	A	cquestgarden.com
137.189.165.62	A	www.learningvillages.net
137.189.165.128	A+PTR	pc165128.fed.cuhk.edu.hk
137.189.165.128	A	ccn.com.hk
137.189.165.173	A	science.fed.cuhk.edu.hk
137.189.166.68	A+PTR	moon068.psy.cuhk.edu.hk
137.189.166.100	A+PTR	ns1.psy.cuhk.edu.hk
137.189.166.134	A+PTR	quanlab.psy.cuhk.edu.hk
137.189.166.201	A+PTR	shine.psy.cuhk.edu.hk
137.189.166.202	A+PTR	artemis.psy.cuhk.edu.hk
137.189.166.202	A	origin.psy.cuhk.edu.hk
137.189.166.202	A	psy.cuhk.edu.hk
137.189.167.228	PTR	epson-color-laser.soc.cuhk.edu.hk
137.189.167.237	PTR	course.soc.cuhk.edu.hk
137.189.167.237	PTR	gee.soc.cuhk.edu.hk
137.189.167.237	PTR	testing.soc.cuhk.edu.hk