Robtex

Up: 197.47.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 197.47.36.0/23
Down right: 197.47.38.0/23

IP	Type	Hostname
197.47.39.5	PTR	host-197.47.39.5.tedata.net
197.47.39.10	PTR	host-197.47.39.10.tedata.net
197.47.39.12	PTR	host-197.47.39.12.tedata.net
197.47.39.16	PTR	host-197.47.39.16.tedata.net
197.47.39.24	PTR	host-197.47.39.24.tedata.net
197.47.39.29	PTR	host-197.47.39.29.tedata.net
197.47.39.31	PTR	host-197.47.39.31.tedata.net
197.47.39.49	PTR	host-197.47.39.49.tedata.net
197.47.39.57	PTR	host-197.47.39.57.tedata.net
197.47.39.58	PTR	host-197.47.39.58.tedata.net
197.47.39.62	PTR	host-197.47.39.62.tedata.net
197.47.39.66	PTR	host-197.47.39.66.tedata.net
197.47.39.69	PTR	host-197.47.39.69.tedata.net
197.47.39.82	PTR	host-197.47.39.82.tedata.net
197.47.39.86	PTR	host-197.47.39.86.tedata.net
197.47.39.90	PTR	host-197.47.39.90.tedata.net
197.47.39.102	PTR	host-197.47.39.102.tedata.net
197.47.39.103	PTR	host-197.47.39.103.tedata.net
197.47.39.106	PTR	host-197.47.39.106.tedata.net
197.47.39.109	PTR	host-197.47.39.109.tedata.net
197.47.39.115	PTR	host-197.47.39.115.tedata.net
197.47.39.120	PTR	host-197.47.39.120.tedata.net
197.47.39.129	PTR	host-197.47.39.129.tedata.net
197.47.39.131	PTR	host-197.47.39.131.tedata.net
197.47.39.142	PTR	host-197.47.39.142.tedata.net
197.47.39.176	PTR	host-197.47.39.176.tedata.net
197.47.39.180	PTR	host-197.47.39.180.tedata.net
197.47.39.184	PTR	host-197.47.39.184.tedata.net
197.47.39.192	PTR	host-197.47.39.192.tedata.net
197.47.39.197	PTR	host-197.47.39.197.tedata.net
197.47.39.209	PTR	host-197.47.39.209.tedata.net
197.47.39.214	PTR	host-197.47.39.214.tedata.net
197.47.39.223	PTR	host-197.47.39.223.tedata.net
197.47.39.225	PTR	host-197.47.39.225.tedata.net
197.47.39.234	PTR	host-197.47.39.234.tedata.net
197.47.39.238	PTR	host-197.47.39.238.tedata.net
197.47.39.250	PTR	host-197.47.39.250.tedata.net