Robtex

Up: 54.231.12.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 54.231.12.64/27
Down right: 54.231.12.96/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.231.12.64	PTR	s3-1.amazonaws.com
54.231.12.65	A	ping.enphaseenergy.com.s3.amazonaws.com
54.231.12.65	A	download.moldiscovery.com
54.231.12.65	A	skillfactory.ru.s3.amazonaws.com
54.231.12.67	PTR	s3-external-1-w.amazonaws.com
54.231.12.68	A	contabilone.com.br
54.231.12.68	A	genealogysystems.com
54.231.12.68	A	usasuperkids.com
54.231.12.72	PTR	s3-1.amazonaws.com
54.231.12.72	A	images.tshirtsubway.com
54.231.12.73	PTR	s3-1-w.amazonaws.com
54.231.12.73	A	site.dogids.com
54.231.12.73	A	isragifts.s3.amazonaws.com
54.231.12.75	PTR	s3-external-1-w.amazonaws.com
54.231.12.76	PTR	s3-website-us-east-1.amazonaws.com
54.231.12.76	A	jimmychion.com
54.231.12.76	A	postersnpictureframes.com
54.231.12.80	PTR	s3-1.amazonaws.com
54.231.12.80	A	cdn.journalism.cuny.edu
54.231.12.81	PTR	s3-1-w.amazonaws.com
54.231.12.81	A	cdn.performersoft.com
54.231.12.81	A	images.autocatch.com
54.231.12.84	A	dandyspaniel.com
54.231.12.84	A	mail.jmsconsulting.com
54.231.12.84	A	www.kitchenremodelideas.com
54.231.12.88	PTR	s3-1.amazonaws.com
54.231.12.88	A	mustpax.com
54.231.12.88	A	dl.updtcntr.com
54.231.12.89	PTR	s3-1-w.amazonaws.com
54.231.12.89	A	ssets.newsinc.com.s3.amazonaws.com
54.231.12.89	A	posterous.com.s3.amazonaws.com
54.231.12.91	PTR	s3-external-1-w.amazonaws.com
54.231.12.92	PTR	s3-website-us-east-1.amazonaws.com
54.231.12.92	A	kmort.com
54.231.12.92	A	personalnav.com
54.231.12.96	PTR	s3-1.amazonaws.com
54.231.12.96	A	download.mirc.com
54.231.12.96	A	upload3.studionow.com
54.231.12.97	PTR	s3-1-w.amazonaws.com
54.231.12.97	A	images.classiccars.com.s3.amazonaws.com
54.231.12.97	A	static.alexa.com
54.231.12.99	PTR	s3-external-1-w.amazonaws.com
54.231.12.100	PTR	s3-website-us-east-1.amazonaws.com
54.231.12.100	A	amelielamont.com
54.231.12.100	A	cloudninecupcake.com
54.231.12.104	PTR	s3-1.amazonaws.com
54.231.12.105	PTR	s3-1-w.amazonaws.com
54.231.12.105	A	onswipe.com.s3.amazonaws.com
54.231.12.105	A	*.easygps.com.s3.amazonaws.com
54.231.12.106	PTR	s3-external-1.amazonaws.com
54.231.12.108	PTR	s3-website-us-east-1.amazonaws.com
54.231.12.108	A	offline.jefatech.com
54.231.12.108	A	onlythebestcoupons.com
54.231.12.112	A	m.atmalinks.com
54.231.12.113	PTR	s3-1-w.amazonaws.com
54.231.12.113	A	*.adtaily.pl.s3.amazonaws.com
54.231.12.113	A	err3.com
54.231.12.115	PTR	s3-external-1-w.amazonaws.com
54.231.12.116	A	vlingstv.com
54.231.12.116	A	kevincollignon.com
54.231.12.116	A	annwfriedman.com
54.231.12.120	PTR	s3-1.amazonaws.com
54.231.12.120	A	media.parlingo.com
54.231.12.121	PTR	s3-1-w.amazonaws.com
54.231.12.121	A	public.production.s3.amazonaws.com
54.231.12.121	A	image.aausports.org
54.231.12.123	PTR	s3-external-1-w.amazonaws.com
54.231.12.124	PTR	s3-website-us-east-1.amazonaws.com
54.231.12.124	A	www.caelyx.net
54.231.12.124	A	h-oak.com