Robtex

Up: 72.52.13.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 72.52.13.128/26
Down right: 72.52.13.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.52.13.146	PTR	unknown.prolexic.com
72.52.13.154	PTR	unknown.prolexic.com
72.52.13.172	PTR	unknown.prolexic.com
72.52.13.172	A	employeeportal.com
72.52.13.172	A	mail.ilsportal.com
72.52.13.174	PTR	a72-52-13-174.deploy.static.akamaitechnologies.com
72.52.13.174	A	cityscapeapartments.com
72.52.13.174	A	willowoodharrison.com
72.52.13.176	PTR	unknown.prolexic.com
72.52.13.182	PTR	unknown.prolexic.com
72.52.13.182	A	vacancy.com
72.52.13.186	A	fr.wip.mandg.com
72.52.13.186	A	www.mandg.fr
72.52.13.187	PTR	unknown.prolexic.com
72.52.13.187	A	uk.wip.mandg.com
72.52.13.200	PTR	unknown.prolexic.com
72.52.13.200	A	visa.pl
72.52.13.200	A	www.visa.pl
72.52.13.201	PTR	unknown.prolexic.com
72.52.13.201	A	visa.no
72.52.13.202	PTR	unknown.prolexic.com
72.52.13.202	A	www.visa.cz
72.52.13.202	A	visa.sk
72.52.13.203	PTR	unknown.prolexic.com
72.52.13.203	A	visa.fi
72.52.13.203	A	www.visa.fi
72.52.13.204	PTR	unknown.prolexic.com
72.52.13.204	A	www.visa.be
72.52.13.204	A	visa.be
72.52.13.205	PTR	a72-52-13-205.deploy.static.akamaitechnologies.com
72.52.13.205	A	visa.de
72.52.13.205	A	www.visa.de
72.52.13.206	PTR	unknown.prolexic.com
72.52.13.206	A	visa.se
72.52.13.206	A	www.visa.se
72.52.13.215	PTR	unknown.prolexic.com
72.52.13.233	PTR	unknown.prolexic.com
72.52.13.234	PTR	unknown.prolexic.com
72.52.13.235	PTR	unknown.prolexic.com
72.52.13.236	PTR	unknown.prolexic.com
72.52.13.237	PTR	unknown.prolexic.com
72.52.13.242	PTR	unknown.prolexic.com
72.52.13.244	PTR	unknown.prolexic.com
72.52.13.244	A	fr1.darkorbit.com
72.52.13.244	A	www.fr1.darkorbit.com
72.52.13.253	PTR	unknown.prolexic.com