Robtex

Up: 49.128.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 49.128.41.0/25
Down right: 49.128.41.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
49.128.41.50	PTR	mail.opennet.com.sg
49.128.41.55	PTR	55.41.128.49.static.m1net.com.sg
49.128.41.55	A	mx1.opennet.com.sg
49.128.41.104	PTR	104.41.128.49.static.m1net.com.sg
49.128.41.162	A+PTR	mail.thatz.com
49.128.41.163	PTR	163.41.128.49.static.m1net.com.sg
49.128.41.163	A	mail1.iwadesign.com.sg
49.128.41.169	PTR	169.41.128.49.static.m1net.com.sg
49.128.41.169	A	mx.thatzcard.com
49.128.41.169	A	mail.thatzcontact.com
49.128.41.171	A	thatzcontact.com
49.128.41.172	PTR	172.41.128.49.static.m1net.com.sg
49.128.41.172	A	yummydurian.com
49.128.41.173	PTR	173.41.128.49.static.m1net.com.sg
49.128.41.173	A	printhatz.com
49.128.41.173	A	salutensmen.sg
49.128.41.243	PTR	243.41.128.49.static.m1net.com.sg
49.128.41.243	A	zhonghuayiyuan.com
49.128.41.243	A	www.singaporetcm.com
49.128.41.244	PTR	244.41.128.49.static.m1net.com.sg
49.128.41.244	A	singaporetcm.edu.sg