Robtex

Up: 50.0.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 50.0.144.0/21
Down right: 50.0.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
50.0.144.0	PTR	50-0-144-0.dsl.dynamic.sonic.net
50.0.145.5	A+PTR	doorstop.shorted.net
50.0.145.5	A	doorstop.oneoffengineering.net
50.0.145.5	A	doorstop.oneoffengineering.com
50.0.145.228	A+PTR	50-0-145-228.dsl.static.fusionbroadband.com
50.0.145.228	A	prolificprogrammer.com
50.0.145.251	PTR	50-0-145-251.dsl.static.fusionbroadband.com
50.0.145.251	A	owa.mpgtechservices.com
50.0.146.0	PTR	50-0-146-0.dsl.dynamic.sonic.net
50.0.146.65	A+PTR	50-0-146-65.dsl.dynamic.sonic.net
50.0.146.78	A	brandpanda.com
50.0.147.0	PTR	50-0-147-0.dsl.dynamic.sonic.net
50.0.148.0	PTR	50-0-148-0.dedicated.static.sonic.net
50.0.148.148	A	mail.groskopf.com
50.0.149.14	A+PTR	50-0-149-14.dsl.dynamic.fusionbroadband.com
50.0.149.14	A	jameswhale.org
50.0.149.74	A	fooninja.org
50.0.149.90	A	50-0-149-90.dsl.dynamic.fusionbroadband.com
50.0.149.169	A+PTR	50-0-149-169.dsl.dynamic.fusionbroadband.com
50.0.149.169	A	sirboi.com
50.0.150.0	PTR	50-0-150-0.dsl.static.sonic.net
50.0.150.16	A	net.infoexpress.com
50.0.150.25	A	anduin.dpdx.net
50.0.150.25	A	50-0-150-25.dedicated.static.sonic.net
50.0.150.25	A	dpdx.net
50.0.150.49	A+PTR	ns.home.live555.com
50.0.150.49	A	home.live555.com
50.0.150.65	PTR	50-0-150-65.dsl.static.fusionbroadband.com
50.0.150.65	A	b.ns.nerdnet.org
50.0.150.65	A	a.mx.nerdnet.org
50.0.150.67	PTR	50-0-150-67.dsl.static.fusionbroadband.com
50.0.150.67	A	x.mx.nerdnet.org
50.0.150.67	A	y.mx.nerdnet.org
50.0.150.93	A	nswa.eneura.co.uk
50.0.150.93	A	50-0-150-93.dsl.static.sonic.net
50.0.150.93	A	nswa.eneura.com
50.0.150.96	A	tantale.fifi.org
50.0.150.97	A	ceramic.fifi.org
50.0.150.99	A+PTR	old-tantale.fifi.org
50.0.150.99	A	old-vhost.fifi.org
50.0.150.116	A	mailserver.galtjohnson.com
50.0.150.116	A	mailserver.cocknochle.com
50.0.150.116	A	cocknochle.com
50.0.150.214	A	ns1.xcllnt.net
50.0.150.214	A	brandonjeffreysutter.org
50.0.150.214	A	www.xcllnt.net
50.0.150.227	A	cackl.com
50.0.150.227	A	www.cackl.com
50.0.150.228	A	adam.rangitoto.com
50.0.150.228	A	rangitoto.com
50.0.150.240	A+PTR	sivka.rdy.com
50.0.150.240	A	www.rdy.com
50.0.150.240	A	ns.rdy.com
50.0.151.0	PTR	50-0-151-0.dsl.dynamic.sonic.net
50.0.151.50	PTR	50-0-151-50.dsl.dynamic.sonic.net
50.0.151.65	A	alesandreo.us
50.0.151.165	A	50-0-151-165.dsl.dynamic.sonic.net
50.0.151.176	PTR	50-0-151-176.dsl.dynamic.fusionbroadband.com
50.0.152.194	A+PTR	50-0-152-194.dedicated.static.sonic.net
50.0.153.25	A	50-0-153-25.dedicated.static.sonic.net
50.0.154.0	PTR	50-0-154-0.dsl.dynamic.sonic.net
50.0.154.51	PTR	50-0-154-51.dsl.dynamic.sonic.net
50.0.154.138	A	50-0-154-138.dsl.dynamic.fusionbroadband.com
50.0.155.0	PTR	50-0-155-0.dsl.static.sonic.net
50.0.155.10	A	mitch.mcn.org
50.0.155.11	A	jerry-laptop.mcn.org
50.0.155.12	A	rob-laptop.mcn.org
50.0.155.14	A	backup.mcn.org
50.0.155.16	A	hillhouseinn.info
50.0.155.42	A	rob-laptop.mcn.org
50.0.155.43	A	jerry-laptop.mcn.org
50.0.155.44	A	mitch.mcn.org
50.0.155.44	A	jiro.mcn.org
50.0.155.47	A	david.mcn.org
50.0.155.54	A	backup.mcn.org
50.0.155.242	PTR	50-0-155-242.dsl.static.sonic.net
50.0.155.242	A	david.mcn.org
50.0.155.244	A	jiro.mcn.org
50.0.156.185	A	50-0-156-185.dsl.dynamic.fusionbroadband.com
50.0.157.0	PTR	50-0-157-0.dsl.static.sonic.net
50.0.157.8	A	50-0-157-8.dsl.static.sonic.net
50.0.157.8	A	galac.tk
50.0.157.236	A	neotoy.info
50.0.158.0	PTR	50-0-158-0.dsl.dynamic.sonic.net
50.0.159.208	PTR	50-0-159-208.dsl.static.sonic.net