Robtex

Up: 41.42.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 41.42.84.0/23
Down right: 41.42.86.0/23

IP	Type	Hostname
41.42.84.64	PTR	host-41.42.84.64.tedata.net
41.42.84.71	PTR	host-41.42.84.71.tedata.net
41.42.84.171	PTR	host-41.42.84.171.tedata.net
41.42.84.241	PTR	host-41.42.84.241.tedata.net
41.42.85.99	PTR	host-41.42.85.99.tedata.net
41.42.85.121	PTR	host-41.42.85.121.tedata.net
41.42.85.126	PTR	host-41.42.85.126.tedata.net
41.42.85.196	PTR	host-41.42.85.196.tedata.net
41.42.85.235	PTR	host-41.42.85.235.tedata.net
41.42.86.41	PTR	host-41.42.86.41.tedata.net
41.42.86.46	PTR	host-41.42.86.46.tedata.net
41.42.86.47	PTR	host-41.42.86.47.tedata.net
41.42.86.86	PTR	host-41.42.86.86.tedata.net
41.42.86.193	PTR	host-41.42.86.193.tedata.net
41.42.86.239	PTR	host-41.42.86.239.tedata.net
41.42.87.6	PTR	host-41.42.87.6.tedata.net
41.42.87.77	PTR	host-41.42.87.77.tedata.net
41.42.87.86	PTR	host-41.42.87.86.tedata.net