Robtex

Up: 65.49.128.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 65.49.128.0/24
Down right: 65.49.129.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
65.49.128.0	PTR	65-49-128-0.iosaz.net
65.49.128.3	PTR	cust0.iosaz.net
65.49.128.18	A+PTR	nsmaster.iosaz.net
65.49.128.18	A	nsmaster.aspect1.net
65.49.128.20	A+PTR	ns1.iosaz.net
65.49.128.20	A	ns1.verdenet.com
65.49.128.20	A	ns1.aspect1.net
65.49.128.25	PTR	mail-gateway.iosaz.net
65.49.128.25	A	mailgateway.aspect1.net
65.49.128.26	PTR	mail.iosaz.net
65.49.128.26	A	pop.aspect1.net
65.49.128.26	A	mail.blakemfg.com
65.49.128.28	A	webmail.aspect1.net
65.49.128.30	PTR	65-49-128-30.iosaz.net
65.49.128.34	PTR	mmnodea.iosaz.net
65.49.128.34	A	mmnodea.aspect1.net
65.49.128.35	PTR	mmnodeb.iosaz.net
65.49.128.35	A	mmnodeb.aspect1.net
65.49.128.41	A	radiusgateway.aspect1.net
65.49.128.42	A	radius1.iosaz.net
65.49.128.42	A	radius1.infomagic.net
65.49.128.86	PTR	ogweb-test.iosaz.net
65.49.128.98	PTR	65-49-128-98.iosaz.net
65.49.128.98	A	www.conx.net
65.49.128.98	A	conx.net
65.49.128.210	PTR	65-49-128-210.iosaz.net
65.49.128.210	A	rt.iosaz.net
65.49.129.1	PTR	gateway-cust0-333e.iosaz.net
65.49.129.20	A+PTR	ns2.iosaz.net
65.49.129.20	A	ns2.conx.net
65.49.129.20	A	ns3.conx.net
65.49.129.28	A	nagios.aspect1.net
65.49.129.138	A	radius2.infomagic.net
65.49.129.200	PTR	65-49-129-200.phoenix-ix.net