Robtex

Up: 197.39.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 197.39.64.0/19
Down right: 197.39.96.0/19

IP	Type	Hostname
197.39.64.28	PTR	host-197.39.64.28.tedata.net
197.39.66.12	PTR	host-197.39.66.12.tedata.net
197.39.66.160	PTR	host-197.39.66.160.tedata.net
197.39.70.121	PTR	host-197.39.70.121.tedata.net
197.39.75.106	PTR	host-197.39.75.106.tedata.net
197.39.75.134	PTR	host-197.39.75.134.tedata.net
197.39.79.1	PTR	host-197.39.79.1.tedata.net
197.39.79.1	A	zven.no-ip.biz
197.39.79.82	PTR	host-197.39.79.82.tedata.net
197.39.87.96	PTR	host-197.39.87.96.tedata.net
197.39.88.149	PTR	host-197.39.88.149.tedata.net
197.39.91.117	PTR	host-197.39.91.117.tedata.net
197.39.92.162	PTR	host-197.39.92.162.tedata.net
197.39.94.75	PTR	host-197.39.94.75.tedata.net
197.39.96.131	PTR	host-197.39.96.131.tedata.net
197.39.99.11	PTR	host-197.39.99.11.tedata.net
197.39.99.207	PTR	host-197.39.99.207.tedata.net
197.39.101.84	PTR	host-197.39.101.84.tedata.net
197.39.101.136	PTR	host-197.39.101.136.tedata.net
197.39.102.48	PTR	host-197.39.102.48.tedata.net
197.39.111.50	PTR	host-197.39.111.50.tedata.net
197.39.116.72	PTR	host-197.39.116.72.tedata.net
197.39.126.65	PTR	host-197.39.126.65.tedata.net