Robtex

Up: 13.224.218.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 13.224.218.0/25
Down right: 13.224.218.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.224.218.122	A+PTR	server-13-224-218-122.lhr61.r.cloudfront.net
13.224.218.122	A	d284f6up69ng6y.cloudfront.net
13.224.218.153	A	aueb-cslabs.slack.com
13.224.218.153	A	alaskausaim.slack.com
13.224.218.153	A	openpolicyagent.slack.com
13.224.218.170	A	d3hskt5fsj4ixa.cloudfront.net