Robtex

Up: 72.21.194.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 72.21.194.128/26
Down right: 72.21.194.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.21.194.129	A	prime.amazon.com
72.21.194.135	A	kindle-periodicals-cs-sandbox.amazon.com
72.21.194.136	A	amazonsupply.com
72.21.194.139	PTR	s3-1.amazonaws.com
72.21.194.140	PTR	s3-1-w.amazonaws.com
72.21.194.140	A	tibco-s3.s3.amazonaws.com
72.21.194.140	A	nettuts.s3.amazonaws.com
72.21.194.141	PTR	s3-external-1.amazonaws.com
72.21.194.142	PTR	s3-console-us-standard.console.aws.amazon.com
72.21.194.143	PTR	s3-console-us-standard.amazonaws.com
72.21.194.144	PTR	seeder.amazonaws.com
72.21.194.145	PTR	tracker.amazonaws.com
72.21.194.146	PTR	s3-website-us-east-1.amazonaws.com
72.21.194.146	A	netpositiveinteractive.com
72.21.194.147	PTR	anon-cp.storagegateway.us-east-1.amazonaws.com
72.21.194.148	PTR	client-cp.storagegateway.us-east-1.amazonaws.com
72.21.194.149	PTR	dp-1.storagegateway.us-east-1.amazonaws.com
72.21.194.151	PTR	proxy-app.storagegateway.us-east-1.amazonaws.com
72.21.194.152	PTR	sg-console-us-standard.console.aws.amazon.com
72.21.194.154	PTR	s3-1-w.amazonaws.com
72.21.194.155	PTR	s3-external-1.amazonaws.com
72.21.194.156	PTR	s3-console-us-standard.console.aws.amazon.com
72.21.194.157	PTR	s3-console-us-standard.amazonaws.com
72.21.194.158	PTR	seeder.amazonaws.com
72.21.194.159	PTR	tracker.amazonaws.com
72.21.194.161	PTR	anon-cp.storagegateway.us-east-1.amazonaws.com
72.21.194.162	PTR	client-cp.storagegateway.us-east-1.amazonaws.com
72.21.194.163	PTR	dp-1.storagegateway.us-east-1.amazonaws.com
72.21.194.165	PTR	proxy-app.storagegateway.us-east-1.amazonaws.com
72.21.194.167	A	whispercast.amazon.com
72.21.194.168	A	lbr-optimized.console-l.amazonaws.com
72.21.194.168	A	us-east-1.console.aws.amazon.com
72.21.194.171	A	applab-sdk.amazon.com
72.21.194.177	A	mturk-requester-sandbox.us-east-1.amazonaws.com
72.21.194.178	A	mturk-requester.us-east-1.amazonaws.com
72.21.194.179	A	sesblog.amazon.com
72.21.194.189	A	dp-br-preprod.amazon.com
72.21.194.191	A	www.amazonb2b.com
72.21.194.204	A	www.amazonlogistics.com
72.21.194.207	A	ws.audible.com
72.21.194.207	A	aws.audible.com
72.21.194.212	A	mail.gzieye.com
72.21.194.212	A	smtp-b4.afternoontoremember.com
72.21.194.212	A	origin-www.amazon.com
72.21.194.215	A	opf-www.amazon.ca
72.21.194.217	A	tech-book-store.amazon.com
72.21.194.218	A	opf-sellercentral.amazon.com
72.21.194.218	A	origin-sellercentral.amazon.com
72.21.194.224	A	money-markets-blog.amazon.com
72.21.194.227	A	lacoste-checkout.webstorepowered.com
72.21.194.230	A+PTR	msh.amazon.ca
72.21.194.232	A	evi.com
72.21.194.237	A	java.awsblog.com
72.21.194.238	A	ruby.awsblog.com
72.21.194.240	A	mobile.awsblog.com
72.21.194.247	A	cde-ta-g7g-preprod.amazon.com
72.21.194.248	A	cde-ta-g7g.amazon.ca
72.21.194.248	A	cde-ta-g7g.amazon.com
72.21.194.249	A	cloudformation.us-east-1.amazonaws.com
72.21.194.254	A	login.amazon.com