Robtex

Up: 13.33.236.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 13.33.238.0/24
Down right: 13.33.239.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.33.238.170	A+PTR	server-13-33-238-170.mad51.r.cloudfront.net
13.33.238.186	PTR	server-13-33-238-186.mad51.r.cloudfront.net
13.33.238.186	A	bombay.awsapps.com
13.33.238.186	A	presto.awsapps.com
13.33.239.63	PTR	server-13-33-239-63.mad51.r.cloudfront.net
13.33.239.63	A	prosport.awsapps.com
13.33.239.63	A	clearview.awsapps.com
13.33.239.232	A+PTR	server-13-33-239-232.mad51.r.cloudfront.net