Robtex

Up: 197.36.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 197.36.128.0/19
Down right: 197.36.160.0/19

IP	Type	Hostname
197.36.128.240	PTR	host-197.36.128.240.tedata.net
197.36.129.151	PTR	host-197.36.129.151.tedata.net
197.36.131.207	PTR	host-197.36.131.207.tedata.net
197.36.132.148	PTR	host-197.36.132.148.tedata.net
197.36.132.237	PTR	host-197.36.132.237.tedata.net
197.36.134.106	PTR	host-197.36.134.106.tedata.net
197.36.137.163	PTR	host-197.36.137.163.tedata.net
197.36.138.240	PTR	host-197.36.138.240.tedata.net
197.36.143.206	PTR	host-197.36.143.206.tedata.net
197.36.150.227	PTR	host-197.36.150.227.tedata.net
197.36.154.217	PTR	host-197.36.154.217.tedata.net
197.36.158.205	PTR	host-197.36.158.205.tedata.net
197.36.185.158	PTR	host-197.36.185.158.tedata.net
197.36.187.28	PTR	host-197.36.187.28.tedata.net
197.36.189.189	PTR	host-197.36.189.189.tedata.net