Robtex

Up: 72.9.250.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.9.250.0/25
Down right: 72.9.250.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.9.250.133	PTR	gold.dnsprotect.com
72.9.250.138	PTR	gold.dnsprotect.com
72.9.250.140	PTR	gold.dnsprotect.com
72.9.250.142	PTR	gold.dnsprotect.com
72.9.250.144	PTR	gold.dnsprotect.com
72.9.250.145	PTR	gold.dnsprotect.com
72.9.250.150	PTR	gold.dnsprotect.com
72.9.250.151	PTR	gold.dnsprotect.com
72.9.250.153	PTR	gold.dnsprotect.com
72.9.250.155	PTR	gold.dnsprotect.com
72.9.250.156	PTR	gold.dnsprotect.com
72.9.250.159	PTR	gold.dnsprotect.com
72.9.250.162	PTR	win1.nswebhost.com
72.9.250.162	A	ns1.skynetserver4.com
72.9.250.162	A	ns1.anscom.net
72.9.250.163	PTR	win1.nswebhost.com
72.9.250.163	A	ns2.anscom.net
72.9.250.163	A	ns2.skynetserver4.com
72.9.250.164	A	mail.hjbailey.com
72.9.250.165	PTR	win1.nswebhost.com
72.9.250.166	PTR	win1.nswebhost.com
72.9.250.171	A	ns0.leetsauce.net.20081225080946.deleted.gkg.net
72.9.250.172	PTR	para.speedconnect.us
72.9.250.177	PTR	ns1.websitehosting1.com
72.9.250.178	PTR	ns2.websitehosting1.com
72.9.250.181	PTR	techworlds.org
72.9.250.194	PTR	orbit.dnsprotect.com
72.9.250.195	PTR	orbit.dnsprotect.com
72.9.250.195	A	ns2.teamunited.com
72.9.250.199	PTR	orbit.dnsprotect.com
72.9.250.200	PTR	orbit.dnsprotect.com
72.9.250.203	PTR	orbit.dnsprotect.com
72.9.250.206	PTR	orbit.dnsprotect.com
72.9.250.209	PTR	orbit.dnsprotect.com
72.9.250.210	PTR	orbit.dnsprotect.com
72.9.250.213	PTR	orbit.dnsprotect.com
72.9.250.215	PTR	orbit.dnsprotect.com
72.9.250.218	PTR	orbit.dnsprotect.com
72.9.250.220	PTR	orbit.dnsprotect.com
72.9.250.221	PTR	orbit.dnsprotect.com
72.9.250.222	PTR	orbit.dnsprotect.com