Robtex

Up: 75.117.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 75.117.16.0/22
Down right: 75.117.20.0/22

IP	Type	Hostname
75.117.16.2	PTR	h2.16.117.75.dynamic.ip.windstream.net
75.117.16.128	PTR	h128.16.117.75.dynamic.ip.windstream.net
75.117.19.42	PTR	h42.19.117.75.dynamic.ip.windstream.net
75.117.19.77	A	h77.19.117.75.dynamic.ip.windstream.net
75.117.19.202	PTR	h202.19.117.75.dynamic.ip.windstream.net
75.117.20.2	PTR	h2.20.117.75.dynamic.ip.windstream.net
75.117.22.52	A	h52.22.117.75.dynamic.ip.windstream.net
75.117.23.114	PTR	h114.23.117.75.dynamic.ip.windstream.net
75.117.23.114	A	geekend.org