Robtex

Up: 203.127.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.127.20.0/23
Down right: 203.127.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.127.20.4	A	gslb-ccb.singaporeair.com
203.127.20.4	A	gslb-ccb.silkair.com
203.127.20.17	A	singapore-airlines.dk
203.127.20.17	A	sqtravelagent.com.sg
203.127.20.17	A	singaporeair.com.my
203.127.20.28	A	sqtravelagent.co.nz
203.127.20.97	PTR	www.childreninsingapore.com
203.127.20.97	A+PTR	www.agencies.com.sg
203.127.20.97	PTR	www.aquaras.com.sg
203.127.20.200	PTR	marketingim.singtel.com
203.127.20.240	A	stock2store.optus.com.au
203.127.22.23	A	webmail.realu.com
203.127.22.69	A+PTR	usgmx7.sg.utacgroup.com
203.127.23.17	A	express.singtel.com
203.127.23.18	A	singtel.sg
203.127.23.18	A	ns1.wavee.com
203.127.23.18	A	ns0.wavee.com
203.127.23.20	A	nslb1.singtel.com
203.127.23.38	A	info.singtel.com
203.127.23.53	A	marketplace.singtel.com
203.127.23.53	A	mail.thtlogistics.com
203.127.23.62	A	web.bizportal.singtel.com
203.127.23.76	A	vmb.bizportal.singtel.com
203.127.23.78	A	onepass.id.singtel.com
203.127.23.109	A	six.sg
203.127.23.149	A	ig-stg.singtel.com
203.127.23.149	A	myportal.singtel.com
203.127.23.166	A	sip.singtel.com
203.127.23.168	A	mail.singtel.com
203.127.23.243	A	rewards.singtel.com