Robtex

Up: 176.42.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 176.42.76.0/23
Down right: 176.42.78.0/23

IP	Type	Hostname
176.42.76.1	PTR	host-176-42-76-1.reverse.superonline.net
176.42.76.37	PTR	host-176-42-76-37.reverse.superonline.net
176.42.76.131	PTR	host-176-42-76-131.reverse.superonline.net
176.42.76.152	PTR	host-176-42-76-152.reverse.superonline.net
176.42.76.215	PTR	host-176-42-76-215.reverse.superonline.net
176.42.77.52	PTR	host-176-42-77-52.reverse.superonline.net
176.42.77.57	PTR	host-176-42-77-57.reverse.superonline.net
176.42.77.58	PTR	host-176-42-77-58.reverse.superonline.net
176.42.77.77	PTR	host-176-42-77-77.reverse.superonline.net
176.42.77.88	PTR	host-176-42-77-88.reverse.superonline.net
176.42.77.122	PTR	host-176-42-77-122.reverse.superonline.net
176.42.77.200	PTR	host-176-42-77-200.reverse.superonline.net
176.42.77.209	PTR	host-176-42-77-209.reverse.superonline.net
176.42.78.27	PTR	host-176-42-78-27.reverse.superonline.net
176.42.78.84	PTR	host-176-42-78-84.reverse.superonline.net
176.42.78.87	PTR	host-176-42-78-87.reverse.superonline.net
176.42.78.169	PTR	host-176-42-78-169.reverse.superonline.net
176.42.78.174	PTR	host-176-42-78-174.reverse.superonline.net
176.42.78.223	PTR	host-176-42-78-223.reverse.superonline.net
176.42.78.254	PTR	host-176-42-78-254.reverse.superonline.net
176.42.79.82	PTR	host-176-42-79-82.reverse.superonline.net
176.42.79.107	PTR	host-176-42-79-107.reverse.superonline.net
176.42.79.193	PTR	host-176-42-79-193.reverse.superonline.net
176.42.79.205	PTR	host-176-42-79-205.reverse.superonline.net
176.42.79.207	PTR	host-176-42-79-207.reverse.superonline.net
176.42.79.229	PTR	host-176-42-79-229.reverse.superonline.net
176.42.79.241	PTR	host-176-42-79-241.reverse.superonline.net
176.42.79.250	PTR	host-176-42-79-250.reverse.superonline.net