Robtex

Up: 54.239.16.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 54.239.16.0/26
Down right: 54.239.16.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.239.16.0	A	sharingservice-beta.amazon.com
54.239.16.1	A	messaging-director-us-east-1.amazon.com
54.239.16.2	A	fcsmmobile.amazon.com
54.239.16.8	A	dp-discovery-na-ext.amazon.com
54.239.16.13	A	www5.amazon.com
54.239.16.19	A	origin-sellercentral.amazon.com.mx
54.239.16.20	A	sb-mediasearchservice.amazon.com
54.239.16.24	A	www8.amazon.com
54.239.16.25	A	lightsail-preprod.aws.amazon.com
54.239.16.27	A+PTR	sb-searchservice.amazon.com
54.239.16.29	A	codedeploy.us-east-1.amazonaws.com
54.239.16.38	A	kindlescout.amazon.com
54.239.16.41	A	origin-www.amazon.com.br
54.239.16.42	A	auth-zapposcouture-na.amazon.com
54.239.16.53	A	kep.amazon.com
54.239.16.55	A	tas-na-extern.amazon.com
54.239.16.56	A	transcommunication-na-extern.amazon.com
54.239.16.57	A	account.videodirect.amazon.com
54.239.16.57	A	account-merch.amazon.com
54.239.16.59	A	geotrace-na-extern.amazon.com
54.239.16.62	A	sqs-fips.us-east-1.amazonaws.com
54.239.16.65	A	ecs.us-east-1.amazonaws.com
54.239.16.68	A	tachyon.amazon.com
54.239.16.70	A	zpot-na-prod.amazon.com
54.239.16.75	A	mas-ssr-ac.amazon.com
54.239.16.76	A	workersandbox.mturk.com
54.239.16.78	A	www.mturkcontent.com
54.239.16.79	A	www.mturk.com
54.239.16.80	A	zcreator-prod-na.amazon.com
54.239.16.86	A	ucdavis.amazon.com
54.239.16.87	A	purdue.amazon.com
54.239.16.97	A	6pm-latest.amazon.com
54.239.16.100	A	qwp.beautybar.com
54.239.16.100	A	www.yoyo.com
54.239.16.100	A	www.look.com
54.239.16.103	A	sb-shipping.amazon.com
54.239.16.104	A	opf-www.amazon.com.mx
54.239.16.104	A	origin-www.amazon.com.mx
54.239.16.105	A	mt.amazon.com.mx
54.239.16.110	A	rd.a9.com
54.239.16.119	A	kwis-opf-preprod.amazon.com
54.239.16.120	A	xml-na.amznxslt.com
54.239.16.120	A	webservices.amazon.ca
54.239.16.120	A	ecs.amazonaws.ca
54.239.16.123	A	parker-gateway-na.amazon.com