Robtex

Up: 72.52.2.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.52.2.0/25
Down right: 72.52.2.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.52.2.1	PTR	a72-52-2-1.deploy.static.akamaitechnologies.com
72.52.2.1	A	srv2-luo.ma
72.52.2.1	A	ns.marcmac.net
72.52.2.2	PTR	unknown.prolexic.com
72.52.2.6	PTR	unknown.prolexic.com
72.52.2.7	PTR	unknown.prolexic.com
72.52.2.8	PTR	unknown.prolexic.com
72.52.2.9	PTR	unknown.prolexic.com
72.52.2.17	PTR	unknown.prolexic.com
72.52.2.18	PTR	unknown.prolexic.com
72.52.2.32	PTR	unknown.prolexic.com
72.52.2.33	PTR	unknown.prolexic.com
72.52.2.34	PTR	unknown.prolexic.com
72.52.2.41	PTR	unknown.prolexic.com
72.52.2.46	PTR	unknown.prolexic.com
72.52.2.49	PTR	unknown.prolexic.com
72.52.2.55	PTR	unknown.prolexic.com
72.52.2.59	PTR	unknown.prolexic.com
72.52.2.63	PTR	unknown.prolexic.com
72.52.2.70	PTR	unknown.prolexic.com
72.52.2.74	PTR	unknown.prolexic.com
72.52.2.76	PTR	unknown.prolexic.com
72.52.2.86	A+PTR	a72-52-2-86.deploy.static.akamaitechnologies.com
72.52.2.92	PTR	unknown.prolexic.com
72.52.2.111	PTR	unknown.prolexic.com
72.52.2.140	PTR	unknown.prolexic.com
72.52.2.141	PTR	unknown.prolexic.com
72.52.2.168	PTR	unknown.prolexic.com
72.52.2.181	PTR	a72-52-2-181.deploy.static.akamaitechnologies.com
72.52.2.185	PTR	unknown.prolexic.com
72.52.2.212	PTR	unknown.prolexic.com
72.52.2.255	PTR	a72-52-2-255.deploy.static.akamaitechnologies.com