Robtex

Up: 41.42.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 41.42.80.0/23
Down right: 41.42.82.0/23

IP	Type	Hostname
41.42.80.6	PTR	host-41.42.80.6.tedata.net
41.42.80.12	PTR	host-41.42.80.12.tedata.net
41.42.80.48	PTR	host-41.42.80.48.tedata.net
41.42.80.90	PTR	host-41.42.80.90.tedata.net
41.42.81.3	PTR	host-41.42.81.3.tedata.net
41.42.81.4	PTR	host-41.42.81.4.tedata.net
41.42.81.37	PTR	host-41.42.81.37.tedata.net
41.42.81.55	PTR	host-41.42.81.55.tedata.net
41.42.81.130	PTR	host-41.42.81.130.tedata.net
41.42.82.55	PTR	host-41.42.82.55.tedata.net
41.42.82.203	PTR	host-41.42.82.203.tedata.net
41.42.83.67	PTR	host-41.42.83.67.tedata.net
41.42.83.155	PTR	host-41.42.83.155.tedata.net
41.42.83.206	PTR	host-41.42.83.206.tedata.net
41.42.83.245	PTR	host-41.42.83.245.tedata.net