Robtex

Up: 54.239.29.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 54.239.29.0/26
Down right: 54.239.29.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.239.29.0	A	unagi-na.amazon.com
54.239.29.1	A	jeeves-widget-service.amazon.com
54.239.29.5	A	sb-website-returns-svc.amazon.com
54.239.29.8	A	ec2.amazonaws.com
54.239.29.9	A	thexba.net
54.239.29.13	A	support.us-east-1.amazonaws.com
54.239.29.17	A	jeeves-widget-service.amazon.com
54.239.29.26	A	cloudfront.amazonaws.com
54.239.29.30	A	warpspeed.us-east-1.aws.amazon.com
54.239.29.32	A	msh.amazon.com
54.239.29.34	A	alexa-calendar-notification-preview.amazon.com
54.239.29.35	A	smile.amazon.com
54.239.29.38	A	logistics.amazon.com.mx
54.239.29.42	A	payments-sandbox.amazon.com
54.239.29.45	A	www.gamesimdb.com
54.239.29.45	A	reviews.imdb.com
54.239.29.45	A	www.imdbonline.com
54.239.29.51	A	cloudfront.amazonaws.com
54.239.29.54	A	warpspeed.us-east-1.aws.amazon.com
54.239.29.63	A	tracker.amazonaws.com
54.239.29.64	A	warpspeed.us-east-1.aws.amazon.com
54.239.29.65	A	cloudfront.amazonaws.com
54.239.29.73	A	origin-www.audible.com
54.239.29.73	A	audible.com
54.239.29.73	A	www.audible.com
54.239.29.74	A	giveaway.amazon.com
54.239.29.97	A	codepipeline.us-east-1.amazonaws.com
54.239.29.98	A	cloudtrail.us-east-1.amazonaws.com
54.239.29.101	A	elastictranscoder.us-east-1.amazonaws.com
54.239.29.103	A	dynamodb-toolbox.aws.amazon.com
54.239.29.105	A	dynamodb-toolbox.aws.amazon.com
54.239.29.116	A	dynamodb-toolbox.aws.amazon.com
54.239.29.119	A	giraffe-core-gamma-1a.us-east-1.amazonaws.com
54.239.29.120	A	dynamodb-toolbox.aws.amazon.com
54.239.29.123	A	elasticbeanstalk-health.us-east-1.amazonaws.com
54.239.29.125	A	worker.mturk.com