Robtex

Up: 203.117.14.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.117.15.0/25
Down right: 203.117.15.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.117.15.99	PTR	sipexternal.cmtsp.com.sg
203.117.15.100	PTR	mail1.cmtsp.com.sg
203.117.15.100	A	mail.cmtsp.com.sg
203.117.15.100	A	cmtsp.com.sg
203.117.15.102	A+PTR	fileserver.cmtsp.com.sg
203.117.15.102	A	smtp2.ipa.com.my
203.117.15.105	A+PTR	www.cmtevents.com
203.117.15.105	A	cmtconferences.com
203.117.15.105	A	cmtconference.com
203.117.15.109	A+PTR	lync.cmtsp.com.sg