Robtex

Up: 197.40.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 197.40.64.0/19
Down right: 197.40.96.0/19

IP	Type	Hostname
197.40.64.2	PTR	host-197.40.64.2.tedata.net
197.40.66.74	PTR	host-197.40.66.74.tedata.net
197.40.70.210	PTR	host-197.40.70.210.tedata.net
197.40.72.3	PTR	host-197.40.72.3.tedata.net
197.40.72.124	PTR	host-197.40.72.124.tedata.net
197.40.72.233	PTR	host-197.40.72.233.tedata.net
197.40.73.3	PTR	host-197.40.73.3.tedata.net
197.40.73.178	PTR	host-197.40.73.178.tedata.net
197.40.76.36	PTR	host-197.40.76.36.tedata.net
197.40.76.91	PTR	host-197.40.76.91.tedata.net
197.40.77.232	PTR	host-197.40.77.232.tedata.net
197.40.79.137	PTR	host-197.40.79.137.tedata.net
197.40.79.194	PTR	host-197.40.79.194.tedata.net
197.40.80.22	PTR	host-197.40.80.22.tedata.net
197.40.83.153	PTR	host-197.40.83.153.tedata.net
197.40.90.35	PTR	host-197.40.90.35.tedata.net
197.40.92.70	PTR	host-197.40.92.70.tedata.net
197.40.95.224	PTR	host-197.40.95.224.tedata.net
197.40.96.63	PTR	host-197.40.96.63.tedata.net
197.40.96.151	PTR	host-197.40.96.151.tedata.net
197.40.96.176	PTR	host-197.40.96.176.tedata.net
197.40.100.1	PTR	host-197.40.100.1.tedata.net
197.40.102.11	PTR	host-197.40.102.11.tedata.net
197.40.104.131	PTR	host-197.40.104.131.tedata.net
197.40.105.147	PTR	host-197.40.105.147.tedata.net
197.40.107.11	PTR	host-197.40.107.11.tedata.net
197.40.107.129	PTR	host-197.40.107.129.tedata.net
197.40.108.211	PTR	host-197.40.108.211.tedata.net
197.40.109.58	PTR	host-197.40.109.58.tedata.net
197.40.113.174	PTR	host-197.40.113.174.tedata.net
197.40.113.250	PTR	host-197.40.113.250.tedata.net
197.40.114.160	PTR	host-197.40.114.160.tedata.net
197.40.114.236	PTR	host-197.40.114.236.tedata.net
197.40.116.54	PTR	host-197.40.116.54.tedata.net
197.40.120.28	PTR	host-197.40.120.28.tedata.net
197.40.125.223	PTR	host-197.40.125.223.tedata.net