Robtex

Up: 23.48.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 23.48.56.0/23
Down right: 23.48.58.0/23

IP	Type	Hostname
23.48.57.128	PTR	a23-48-57-128.deploy.static.akamaitechnologies.com
23.48.57.181	PTR	a23-48-57-181.deploy.static.akamaitechnologies.com
23.48.59.83	PTR	a23-48-59-83.deploy.static.akamaitechnologies.com