Robtex

Up: 197.58.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 197.58.0.0/20
Down right: 197.58.16.0/20

IP	Type	Hostname
197.58.4.97	PTR	host-197.58.4.97.tedata.net
197.58.8.2	PTR	host-197.58.8.2.tedata.net
197.58.14.2	PTR	host-197.58.14.2.tedata.net
197.58.17.2	PTR	host-197.58.17.2.tedata.net
197.58.17.54	PTR	host-197.58.17.54.tedata.net
197.58.23.2	PTR	host-197.58.23.2.tedata.net
197.58.23.172	PTR	host-197.58.23.172.tedata.net
197.58.28.2	PTR	host-197.58.28.2.tedata.net
197.58.31.127	PTR	host-197.58.31.127.tedata.net