Robtex

Up: 13.33.68.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 13.33.69.0/25
Down right: 13.33.69.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.33.69.9	PTR	server-13-33-69-9.phx50.r.cloudfront.net
13.33.69.13	A+PTR	server-13-33-69-13.phx50.r.cloudfront.net
13.33.69.36	A	congratsusers.online
13.33.69.63	A+PTR	server-13-33-69-63.phx50.r.cloudfront.net
13.33.69.84	A+PTR	server-13-33-69-84.phx50.r.cloudfront.net
13.33.69.92	A+PTR	server-13-33-69-92.phx50.r.cloudfront.net
13.33.69.102	A+PTR	server-13-33-69-102.phx50.r.cloudfront.net
13.33.69.104	PTR	server-13-33-69-104.phx50.r.cloudfront.net
13.33.69.142	A	controlpanel.slack.com
13.33.69.142	A	steem.slack.com
13.33.69.142	A	justnativesoftware.slack.com
13.33.69.149	A	congratsusers.online
13.33.69.152	A+PTR	server-13-33-69-152.phx50.r.cloudfront.net
13.33.69.157	A	server-13-33-69-157.phx50.r.cloudfront.net
13.33.69.170	A	congratsusers.online
13.33.69.186	A+PTR	server-13-33-69-186.phx50.r.cloudfront.net
13.33.69.197	A	congratsusers.online
13.33.69.213	A+PTR	server-13-33-69-213.phx50.r.cloudfront.net
13.33.69.213	A	storestuff.s3-accelerate.amazonaws.com
13.33.69.230	A+PTR	server-13-33-69-230.phx50.r.cloudfront.net