Robtex

Up: 197.55.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 197.55.0.0/20
Down right: 197.55.16.0/20

IP	Type	Hostname
197.55.0.34	PTR	host-197.55.0.34.tedata.net
197.55.0.161	PTR	host-197.55.0.161.tedata.net
197.55.1.2	PTR	host-197.55.1.2.tedata.net
197.55.1.3	PTR	host-197.55.1.3.tedata.net
197.55.1.34	PTR	host-197.55.1.34.tedata.net
197.55.1.64	PTR	host-197.55.1.64.tedata.net
197.55.1.67	PTR	host-197.55.1.67.tedata.net
197.55.3.65	PTR	host-197.55.3.65.tedata.net
197.55.3.161	PTR	host-197.55.3.161.tedata.net
197.55.5.1	PTR	host-197.55.5.1-static.tedata.net
197.55.17.163	PTR	host-197.55.17.163.tedata.net
197.55.19.35	PTR	host-197.55.19.35.tedata.net
197.55.20.194	PTR	host-197.55.20.194.tedata.net
197.55.24.225	PTR	host-197.55.24.225.tedata.net