Robtex

Up: 203.118.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.118.40.0/23
Down right: 203.118.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.118.40.43	A	mail.fernridge.com
203.118.41.200	PTR	webs02.brains.net
203.118.41.203	A	webs06.brains.net
203.118.41.212	A	srv03.passaporto.sg
203.118.41.221	A	mfserver02.maxfusion.com.sg
203.118.41.222	A	mfserver01.maxfusion.com.sg
203.118.41.251	PTR	sincln1.wanhai.com
203.118.41.252	PTR	sincln2.wanhai.com
203.118.42.27	A	mail.masindologistic.com.sg
203.118.42.28	A	dreamcloud.com.sg
203.118.42.41	A	mail.blueweb.com.sg
203.118.42.58	A	server.vespac.com.sg
203.118.42.125	A	pmirl-security.com
203.118.42.140	A	haigangasia.com
203.118.42.156	PTR	metrohm.com.sg
203.118.42.156	A	dns1.metrohm.sg
203.118.42.156	A	mail2.metrohm.sg
203.118.42.166	A	ddnslink.com
203.118.42.249	A	khc.redirectme.net
203.118.43.158	PTR	smtp.hcap-rhq.com.sg
203.118.43.158	A	shangyewpac.com.sg
203.118.43.242	A+PTR	mail.scidomain.org.sg
203.118.43.244	A+PTR	sci-exch.scidomain.org.sg
203.118.43.245	A+PTR	filter.scidomain.org.sg