Robtex

Up: 72.138.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 72.138.128.0/18
Down right: 72.138.192.0/18

IP	Type	Hostname
72.138.129.36	A	bluecatdsl.mindengross.com
72.138.129.36	A	bluecatdsl.vehiculaw.com
72.138.134.226	A	appleexpress.com
72.138.137.10	PTR	cpe788df750c4d3-cm788df750c4d0.cpe.net.cable.rogers.com
72.138.167.18	A	tbf.cloud
72.138.177.237	A	webtech.on.ca
72.138.185.159	PTR	cpe00222d1d904f-cm00222d1d904b.cpe.net.cable.rogers.com
72.138.186.80	PTR	unallocated-static.rogers.com
72.138.204.151	A	humenet.com
72.138.216.89	PTR	cpebc4dfb5622f3-cmbc4dfb5622f0.cpe.net.fido.ca
72.138.216.99	PTR	unallocated-static.rogers.com
72.138.216.107	PTR	unallocated-static.rogers.com
72.138.235.218	PTR	cpe0023bee43c73-cm0023bee43c70.cpe.net.cable.rogers.com
72.138.252.149	A	mcms.ca