Robtex

Up: 23.53.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 23.53.96.0/23
Down right: 23.53.98.0/23

IP	Type	Hostname
23.53.96.23	PTR	a23-53-96-23.deploy.static.akamaitechnologies.com
23.53.97.72	PTR	a23-53-97-72.deploy.static.akamaitechnologies.com
23.53.97.72	A	a23-53-97-72.deploy.akamaitechnologies.com
23.53.97.94	PTR	a23-53-97-94.deploy.akamaitechnologies.com
23.53.97.135	PTR	a23-53-97-135.deploy.static.akamaitechnologies.com