Robtex

Up: 197.55.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 197.55.192.0/21
Down right: 197.55.200.0/21

IP	Type	Hostname
197.55.192.162	PTR	host-197.55.192.162.tedata.net
197.55.195.3	PTR	host-197.55.195.3.tedata.net
197.55.196.35	PTR	host-197.55.196.35.tedata.net
197.55.198.49	PTR	host-197.55.198.49.tedata.net
197.55.198.131	PTR	host-197.55.198.131-static.tedata.net
197.55.203.144	PTR	host-197.55.203.144.tedata.net
197.55.203.243	PTR	host-197.55.203.243.tedata.net
197.55.206.112	PTR	host-197.55.206.112.tedata.net
197.55.207.176	PTR	host-197.55.207.176.tedata.net