Robtex

Up: 50.31.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 50.31.100.0/25
Down right: 50.31.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
50.31.100.4	PTR	ip4.50-31-100.static.steadfastdns.net
50.31.100.4	A	equian.com
50.31.100.5	PTR	ip5.50-31-100.static.steadfastdns.net
50.31.100.5	A	prizerebel.com
50.31.100.5	A	*.prizerebel.com
50.31.100.7	A+PTR	ip7.50-31-100.static.steadfastdns.net
50.31.100.11	A+PTR	ip11.50-31-100.static.steadfastdns.net
50.31.100.11	A	www.libertybank.com
50.31.100.13	A+PTR	ip13.50-31-100.static.steadfastdns.net
50.31.100.15	PTR	ip15.50-31-100.static.steadfastdns.net
50.31.100.15	A	video.mediagrace.com
50.31.100.15	A	videos.mediagrace.com
50.31.100.18	PTR	ip18.50-31-100.static.steadfastdns.net
50.31.100.18	A	mail.charge.com
50.31.100.18	A	www.charge.com
50.31.100.19	PTR	ip19.50-31-100.static.steadfastdns.net
50.31.100.19	A	www.libertybank.com
50.31.100.19	A	libertybank.com
50.31.100.21	PTR	ip21.50-31-100.static.steadfastdns.net
50.31.100.21	A	dc-4c147a75.unitedskins.net
50.31.100.21	A	dc-8f784c62.getoffyourknees.com
50.31.100.24	PTR	ip24.50-31-100.static.steadfastdns.net
50.31.100.24	A	mail.sudzibas.lv
50.31.100.25	A+PTR	ip25.50-31-100.static.steadfastdns.net
50.31.100.25	A	www.downloadconfirm.net
50.31.100.25	A	www.jafiles.net