Robtex

Up: 23.56.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 23.56.228.0/23
Down right: 23.56.230.0/23

IP	Type	Hostname
23.56.229.9	PTR	a23-56-229-9.deploy.static.akamaitechnologies.com
23.56.229.241	PTR	a23-56-229-241.deploy.static.akamaitechnologies.com
23.56.230.52	PTR	a23-56-230-52.deploy.static.akamaitechnologies.com