Robtex

Up: 197.48.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 197.48.0.0/19
Down right: 197.48.32.0/19

IP	Type	Hostname
197.48.0.0	PTR	host-197.48.0.0.tedata.net
197.48.0.2	PTR	host-197.48.0.2.tedata.net
197.48.7.2	PTR	host-197.48.7.2.tedata.net
197.48.12.133	PTR	host-197.48.12.133.tedata.net
197.48.16.55	PTR	host-197.48.16.55.tedata.net
197.48.19.211	PTR	host-197.48.19.211.tedata.net
197.48.30.2	PTR	host-197.48.30.2.tedata.net
197.48.32.171	PTR	host-197.48.32.171.tedata.net
197.48.35.128	PTR	host-197.48.35.128.tedata.net
197.48.37.79	PTR	host-197.48.37.79.tedata.net
197.48.38.23	PTR	host-197.48.38.23.tedata.net
197.48.44.56	PTR	host-197.48.44.56.tedata.net
197.48.45.247	PTR	host-197.48.45.247.tedata.net
197.48.52.22	PTR	host-197.48.52.22.tedata.net
197.48.61.90	PTR	host-197.48.61.90.tedata.net
197.48.62.187	PTR	host-197.48.62.187.tedata.net