Robtex

Up: 197.36.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 197.36.48.0/21
Down right: 197.36.56.0/21

IP	Type	Hostname
197.36.57.82	PTR	host-197.36.57.82.tedata.net
197.36.57.195	PTR	host-197.36.57.195.tedata.net
197.36.57.242	PTR	host-197.36.57.242.tedata.net
197.36.61.12	PTR	host-197.36.61.12.tedata.net
197.36.61.105	PTR	host-197.36.61.105.tedata.net
197.36.62.153	PTR	host-197.36.62.153.tedata.net