Robtex

Up: 203.83.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.83.220.0/23
Down right: 203.83.222.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.83.220.7	A+PTR	ns-850.amazon.com
203.83.220.22	A	vpn.ivpn.amazon-corp.com
203.83.220.22	A	sin-orca-bak.amazon.com
203.83.220.22	A	sin-a-orca.amazon.com
203.83.220.66	PTR	ap-southeast-1.queue.amazonaws.com
203.83.220.68	PTR	s3-ap-southeast-1.amazonaws.com
203.83.220.70	A+PTR	biltong.ap-southeast-1.ec2-services.amazonaws.com
203.83.220.71	A+PTR	ec2.ap-southeast-1.amazonaws.com
203.83.220.76	A	sdb.ap-southeast-1.amazonaws.com
203.83.220.82	PTR	s3-ap-southeast-1-w.amazonaws.com
203.83.220.82	A	gm-production.s3.amazonaws.com
203.83.220.82	A	cdn.maltdining.com.au
203.83.220.90	PTR	s3-transfer-ap-southeast-1.amazonaws.com
203.83.220.93	PTR	client-cp.storagegateway.ap-southeast-1.amazonaws.com
203.83.220.95	PTR	dp-1.storagegateway.ap-southeast-1.amazonaws.com
203.83.220.122	PTR	s3-website-ap-southeast-1.amazonaws.com
203.83.220.122	A	wheresmyzalora.com
203.83.220.122	A	mifengtd.cn
203.83.220.174	A	sin-orca-bak.amazon.com
203.83.220.174	A	sin-b-orca.amazon.com
203.83.220.174	A	sin-orca.amazon.com
203.83.220.195	PTR	ap-southeast-1.queue.amazonaws.com
203.83.220.198	A+PTR	biltong.ap-southeast-1.ec2-services.amazonaws.com
203.83.220.199	A+PTR	ec2.ap-southeast-1.amazonaws.com
203.83.220.204	A	sdb.ap-southeast-1.amazonaws.com
203.83.220.218	PTR	s3-transfer-ap-southeast-1.amazonaws.com
203.83.220.221	PTR	client-cp.storagegateway.ap-southeast-1.amazonaws.com
203.83.220.223	PTR	dp-1.storagegateway.ap-southeast-1.amazonaws.com
203.83.220.249	PTR	s3-ap-southeast-1.amazonaws.com
203.83.220.249	A	*.imagehosting.at.s3-ap-southeast-1.amazonaws.com
203.83.220.249	A	*.at.s3-ap-southeast-1.amazonaws.com
203.83.220.250	PTR	s3-ap-southeast-1-w.amazonaws.com
203.83.220.250	A	gm-production.s3.amazonaws.com
203.83.220.250	A	cdn.maltdining.com.au
203.83.220.251	PTR	s3-website-ap-southeast-1.amazonaws.com
203.83.220.251	A	*.s3-website-ap-southeast-1.amazonaws.com
203.83.220.251	A	*.amanindo.com.s3-website-ap-southeast-1.amazonaws.com
203.83.221.66	PTR	ap-southeast-1.queue.amazonaws.com
203.83.221.70	A+PTR	biltong.ap-southeast-1.ec2-services.amazonaws.com
203.83.221.71	A+PTR	ec2.ap-southeast-1.amazonaws.com
203.83.221.73	A	monitoring.ap-southeast-1.amazonaws.com
203.83.221.76	A	sdb.ap-southeast-1.amazonaws.com
203.83.221.88	PTR	client-cp.storagegateway.ap-southeast-1.amazonaws.com
203.83.221.91	PTR	s3-transfer-ap-southeast-1.amazonaws.com
203.83.221.93	PTR	dp-1.storagegateway.ap-southeast-1.amazonaws.com
203.83.221.104	A	silvercode.co.nz
203.83.221.119	PTR	s3-ap-southeast-1.amazonaws.com
203.83.221.119	A	*.imagehosting.at.s3-ap-southeast-1.amazonaws.com
203.83.221.119	A	*.at.s3-ap-southeast-1.amazonaws.com
203.83.221.120	PTR	s3-ap-southeast-1-w.amazonaws.com
203.83.221.120	A	gm-production.s3.amazonaws.com
203.83.221.120	A	smowtion.com.s3.amazonaws.com
203.83.221.121	PTR	s3-website-ap-southeast-1.amazonaws.com
203.83.221.121	A	*.s3-website-ap-southeast-1.amazonaws.com
203.83.221.121	A	*.indiaresults.com.s3-website-ap-southeast-1.amazonaws.com