Robtex

Up: 203.121.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.121.80.0/23
Down right: 203.121.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.121.80.82	A	mail.smecreditbureau.com.my
203.121.80.122	A+PTR	mail.rbiconsult.com
203.121.83.40	A	demo-klas.msu.edu.my
203.121.83.40	A	maint-demo.ptpl.edu.my
203.121.83.40	A	msu2u.msu.edu.my
203.121.83.50	A+PTR	mail.msu.edu.my
203.121.83.75	A	klas2.msu.edu.my
203.121.83.134	PTR	cjb-r3-b134.time.net.my
203.121.83.136	PTR	cjb-r3-b136.time.net.my
203.121.83.197	PTR	cjb-r3-b197.time.net.my
203.121.83.238	PTR	cjb-r3-b238.time.net.my