Robtex

Up: 197.33.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 197.33.64.0/22
Down right: 197.33.68.0/22

IP	Type	Hostname
197.33.64.77	PTR	host-197.33.64.77.tedata.net
197.33.64.197	PTR	host-197.33.64.197.tedata.net
197.33.65.99	PTR	host-197.33.65.99.tedata.net
197.33.65.155	PTR	host-197.33.65.155.tedata.net
197.33.65.208	PTR	host-197.33.65.208.tedata.net
197.33.65.252	PTR	host-197.33.65.252.tedata.net
197.33.66.40	PTR	host-197.33.66.40.tedata.net
197.33.66.139	PTR	host-197.33.66.139.tedata.net
197.33.67.80	PTR	host-197.33.67.80.tedata.net
197.33.67.150	PTR	host-197.33.67.150.tedata.net
197.33.67.247	PTR	host-197.33.67.247.tedata.net
197.33.68.107	PTR	host-197.33.68.107.tedata.net
197.33.68.126	PTR	host-197.33.68.126.tedata.net
197.33.68.170	PTR	host-197.33.68.170.tedata.net
197.33.68.194	PTR	host-197.33.68.194.tedata.net
197.33.68.237	PTR	host-197.33.68.237.tedata.net
197.33.69.210	PTR	host-197.33.69.210.tedata.net
197.33.70.3	PTR	host-197.33.70.3.tedata.net
197.33.70.35	PTR	host-197.33.70.35.tedata.net
197.33.70.65	PTR	host-197.33.70.65.tedata.net
197.33.70.81	PTR	host-197.33.70.81.tedata.net
197.33.70.154	PTR	host-197.33.70.154.tedata.net
197.33.70.226	PTR	host-197.33.70.226.tedata.net
197.33.71.111	PTR	host-197.33.71.111.tedata.net
197.33.71.251	PTR	host-197.33.71.251.tedata.net