Robtex

Up: 72.52.13.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 72.52.13.0/26
Down right: 72.52.13.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.52.13.0	PTR	unknown.prolexic.com
72.52.13.1	PTR	unknown.prolexic.com
72.52.13.2	PTR	unknown.prolexic.com
72.52.13.3	PTR	unknown.prolexic.com
72.52.13.4	PTR	unknown.prolexic.com
72.52.13.5	PTR	unknown.prolexic.com
72.52.13.6	PTR	unknown.prolexic.com
72.52.13.7	PTR	unknown.prolexic.com
72.52.13.8	PTR	unknown.prolexic.com
72.52.13.9	PTR	unknown.prolexic.com
72.52.13.10	PTR	unknown.prolexic.com
72.52.13.11	PTR	unknown.prolexic.com
72.52.13.12	PTR	unknown.prolexic.com
72.52.13.13	PTR	unknown.prolexic.com
72.52.13.14	PTR	unknown.prolexic.com
72.52.13.15	PTR	unknown.prolexic.com
72.52.13.16	PTR	unknown.prolexic.com
72.52.13.17	PTR	unknown.prolexic.com
72.52.13.18	PTR	unknown.prolexic.com
72.52.13.19	PTR	unknown.prolexic.com
72.52.13.19	A	grandparker.com
72.52.13.22	PTR	unknown.prolexic.com
72.52.13.35	PTR	unknown.prolexic.com
72.52.13.35	A	theserved.com
72.52.13.35	A	*.theserved.com
72.52.13.50	A	premiermarketingoptions.com
72.52.13.50	A	hifa123.com
72.52.13.50	A	hife123.com
72.52.13.51	A	myhealthlineone.com
72.52.13.53	A	pbobeta.com
72.52.13.53	A	producerofficepro.com
72.52.13.53	A	uhs365.com
72.52.13.54	PTR	unknown.prolexic.com
72.52.13.54	A	alexsia.com
72.52.13.54	A	luxury-interiors.com
72.52.13.69	PTR	unknown.prolexic.com
72.52.13.69	A	icd-pro.com
72.52.13.89	A	callcoming.in
72.52.13.92	A	www4.optionsxpress.com
72.52.13.100	PTR	unknown.prolexic.com
72.52.13.100	A	www.ippayments.com.au
72.52.13.100	A	www-eq.ippayments.com.au
72.52.13.103	PTR	unknown.prolexic.com
72.52.13.104	PTR	unknown.prolexic.com
72.52.13.104	A	secure.optus.com.au
72.52.13.105	PTR	a72-52-13-105.deploy.static.akamaitechnologies.com
72.52.13.107	PTR	unknown.prolexic.com
72.52.13.107	A	www.kd88.com
72.52.13.107	A	kd158.com
72.52.13.112	PTR	unknown.prolexic.com
72.52.13.123	PTR	a72-52-13-123.deploy.static.akamaitechnologies.com
72.52.13.123	A	lloydsbankinggroup.com