Robtex

Up: 197.40.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 197.40.160.0/20
Down right: 197.40.176.0/20

IP	Type	Hostname
197.40.165.110	PTR	host-197.40.165.110.tedata.net
197.40.165.172	PTR	host-197.40.165.172.tedata.net
197.40.168.138	PTR	host-197.40.168.138.tedata.net
197.40.170.68	PTR	host-197.40.170.68.tedata.net
197.40.172.51	PTR	host-197.40.172.51.tedata.net
197.40.174.47	PTR	host-197.40.174.47.tedata.net
197.40.175.76	PTR	host-197.40.175.76.tedata.net
197.40.178.14	PTR	host-197.40.178.14.tedata.net
197.40.178.85	PTR	host-197.40.178.85.tedata.net
197.40.182.226	PTR	host-197.40.182.226.tedata.net
197.40.183.79	A	microsoft.bounceme.net
197.40.188.176	PTR	host-197.40.188.176.tedata.net