Robtex

Up: 203.142.48.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.142.49.0/25
Down right: 203.142.49.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.142.49.19	A+PTR	mx2.tomei.com.my
203.142.49.19	PTR	ns2.tomei.com.my
203.142.49.19	A	mx2.lelumiere.com
203.142.49.85	PTR	mail.sunwaytech.com.my
203.142.49.141	PTR	gate2a.sunway.edu.my
203.142.49.142	PTR	gate2b.sunway.edu.my