Robtex

Up: 197.55.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 197.55.192.0/19
Down right: 197.55.224.0/19

IP	Type	Hostname
197.55.195.3	PTR	host-197.55.195.3.tedata.net
197.55.198.131	PTR	host-197.55.198.131-static.tedata.net
197.55.220.195	PTR	host-197.55.220.195.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