Robtex

Up: 197.55.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 197.55.224.0/20
Down right: 197.55.240.0/20

IP	Type	Hostname
197.55.228.224	PTR	host-197.55.228.224.tedata.net
197.55.240.98	PTR	host-197.55.240.98.tedata.net
197.55.248.193	PTR	host-197.55.248.193.tedata.net
197.55.253.66	PTR	host-197.55.253.66.tedata.net
197.55.255.227	PTR	host-197.55.255.227.tedata.net