Robtex

Up: 54.192.18.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 54.192.18.0/27
Down right: 54.192.18.32/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.192.18.2	A+PTR	server-54-192-18-2.hkg62.r.cloudfront.net
54.192.18.2	A	server-54-192-18-2.iad12.r.cloudfront.net
54.192.18.5	A+PTR	server-54-192-18-5.iad12.r.cloudfront.net
54.192.18.5	A	d1krrfcu7t64m1.cloudfront.net
54.192.18.5	A	opstatic.com
54.192.18.6	A	d2zrz502ltwolq.cloudfront.net
54.192.18.7	A+PTR	server-54-192-18-7.iad12.r.cloudfront.net
54.192.18.7	A	img5-ak.cpcdn.com
54.192.18.9	PTR	server-54-192-18-9.iad12.r.cloudfront.net
54.192.18.10	PTR	server-54-192-18-10.hkg62.r.cloudfront.net
54.192.18.10	A	chika-sakura.deviantart.com
54.192.18.10	A	server-54-192-18-10.iad12.r.cloudfront.net
54.192.18.11	PTR	server-54-192-18-11.iad12.r.cloudfront.net
54.192.18.11	A	live.cbssports.com
54.192.18.11	A	cbs.site.scribblelive.com
54.192.18.12	PTR	server-54-192-18-12.iad12.r.cloudfront.net
54.192.18.12	A	infopls.com
54.192.18.12	A	https-4fee0a-i.sgizmo.eu
54.192.18.13	A+PTR	server-54-192-18-13.iad12.r.cloudfront.net
54.192.18.14	PTR	server-54-192-18-14.iad12.r.cloudfront.net
54.192.18.14	A	prod-assets.periscope.tv
54.192.18.16	A+PTR	server-54-192-18-16.iad12.r.cloudfront.net
54.192.18.16	A	d1krrfcu7t64m1.cloudfront.net
54.192.18.16	A	maxinetrahan.deviantart.com
54.192.18.17	PTR	server-54-192-18-17.iad12.r.cloudfront.net
54.192.18.18	A+PTR	server-54-192-18-18.iad12.r.cloudfront.net
54.192.18.18	A	d1krrfcu7t64m1.cloudfront.net
54.192.18.18	A	opstatic.com
54.192.18.19	A+PTR	server-54-192-18-19.iad12.r.cloudfront.net
54.192.18.19	A	*.tw.htmlns4.usana.com
54.192.18.22	A+PTR	server-54-192-18-22.hkg62.r.cloudfront.net
54.192.18.23	A+PTR	server-54-192-18-23.iad12.r.cloudfront.net
54.192.18.24	A+PTR	server-54-192-18-24.hkg62.r.cloudfront.net
54.192.18.24	A	server-54-192-18-24.iad12.r.cloudfront.net
54.192.18.25	A+PTR	server-54-192-18-25.hkg62.r.cloudfront.net
54.192.18.25	A	server-54-192-18-25.iad12.r.cloudfront.net
54.192.18.26	A+PTR	server-54-192-18-26.hkg62.r.cloudfront.net
54.192.18.26	A	server-54-192-18-26.iad12.r.cloudfront.net
54.192.18.27	PTR	server-54-192-18-27.iad12.r.cloudfront.net
54.192.18.27	A	brothersezmoving.deviantart.com
54.192.18.27	A	mauricelinds410.deviantart.com
54.192.18.29	A+PTR	server-54-192-18-29.iad12.r.cloudfront.net
54.192.18.29	A	firstcu.coop
54.192.18.30	A+PTR	server-54-192-18-30.iad12.r.cloudfront.net
54.192.18.31	A+PTR	server-54-192-18-31.iad12.r.cloudfront.net
54.192.18.31	A	maxinetrahan.deviantart.com
54.192.18.31	A	staging.deviantart.com
54.192.18.33	A+PTR	server-54-192-18-33.iad12.r.cloudfront.net
54.192.18.33	A	millardcunni1024.deviantart.com
54.192.18.33	A	search.ellotte.com
54.192.18.35	PTR	server-54-192-18-35.iad12.r.cloudfront.net
54.192.18.35	A	realtime.taggstar.com
54.192.18.38	PTR	server-54-192-18-38.hkg62.r.cloudfront.net
54.192.18.38	A	d3e4jtxqhsgt0g.cloudfront.net
54.192.18.38	A	server-54-192-18-38.iad12.r.cloudfront.net
54.192.18.40	PTR	server-54-192-18-40.hkg62.r.cloudfront.net
54.192.18.40	A	live.wcpo.com
54.192.18.40	A	bourdainlive.cnn.com
54.192.18.43	A+PTR	server-54-192-18-43.iad12.r.cloudfront.net
54.192.18.45	A+PTR	server-54-192-18-45.iad12.r.cloudfront.net
54.192.18.46	A+PTR	server-54-192-18-46.iad12.r.cloudfront.net
54.192.18.46	A	chika-sakura.deviantart.com
54.192.18.46	A	d28wrpo0cxjw55.cloudfront.net
54.192.18.48	PTR	server-54-192-18-48.hkg62.r.cloudfront.net
54.192.18.48	A	stubdownloader-cdn.prod.mozaws.net
54.192.18.48	A	server-54-192-18-48.iad12.r.cloudfront.net
54.192.18.49	A+PTR	server-54-192-18-49.iad12.r.cloudfront.net
54.192.18.50	A	maxinetrahan.deviantart.com
54.192.18.51	A+PTR	server-54-192-18-51.iad12.r.cloudfront.net
54.192.18.52	A+PTR	server-54-192-18-52.iad12.r.cloudfront.net
54.192.18.52	A	brothersezmoving.deviantart.com
54.192.18.52	A	mauricelinds410.deviantart.com
54.192.18.53	PTR	server-54-192-18-53.iad12.r.cloudfront.net
54.192.18.54	A	chika-sakura.deviantart.com
54.192.18.55	PTR	server-54-192-18-55.iad12.r.cloudfront.net
54.192.18.55	A	maxinetrahan.deviantart.com
54.192.18.55	A	brothersezmoving.deviantart.com
54.192.18.58	A+PTR	server-54-192-18-58.iad12.r.cloudfront.net
54.192.18.58	A	allythepanda.deviantart.com
54.192.18.58	A	51timothymartin3.deviantart.com
54.192.18.59	PTR	server-54-192-18-59.hkg62.r.cloudfront.net
54.192.18.59	A	chika-sakura.deviantart.com
54.192.18.59	A	brothersezmoving.deviantart.com
54.192.18.60	PTR	server-54-192-18-60.hkg62.r.cloudfront.net
54.192.18.61	A+PTR	server-54-192-18-61.iad12.r.cloudfront.net
54.192.18.62	A+PTR	server-54-192-18-62.iad12.r.cloudfront.net
54.192.18.62	A	d3ksyf2t3hkrct.cloudfront.net
54.192.18.63	A+PTR	server-54-192-18-63.iad12.r.cloudfront.net
54.192.18.63	A	opstatic.com