Robtex

Up: 64.30.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.30.144.0/22
Down right: 64.30.148.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.30.144.0	PTR	bgpref1.sdnglobal.com
64.30.145.9	A+PTR	dns1.sdnglobal.com
64.30.145.160	PTR	64-30-145-160.sdnglobal.com
64.30.146.9	A+PTR	dns2.sdnglobal.com
64.30.146.227	PTR	64-30-146-227.sdnglobal.com
64.30.146.250	PTR	64-30-146-250.sdnglobal.com
64.30.147.9	A	dns5.sdnglobal.com
64.30.147.145	PTR	mx1.satcomgroup.com
64.30.148.9	A	dns3.sdnglobal.com
64.30.148.128	PTR	64-30-148-128.sdnglobal.com
64.30.148.224	PTR	64-30-148-224.sdnglobal.com
64.30.148.224	A	107894-fw1.satcomgroup.com
64.30.148.224	A	satcomdistribution.com
64.30.148.238	A	www.horizon-voip.com
64.30.150.1	PTR	64-30-150-1.sdnglobal.com
64.30.150.8	PTR	64-30-150-8.sdnglobal.com
64.30.150.24	PTR	64-30-150-24.sdnglobal.com
64.30.150.48	PTR	64-30-150-48.sdnglobal.com
64.30.150.56	PTR	64-30-150-56.sdnglobal.com
64.30.150.67	PTR	64-30-150-67.sdnglobal.com
64.30.150.115	PTR	64-30-150-115.sdnglobal.com
64.30.150.121	PTR	64-30-150-121.sdnglobal.com
64.30.150.123	PTR	64-30-150-123.sdnglobal.com
64.30.150.129	PTR	64-30-150-129.sdnglobal.com
64.30.150.137	PTR	64-30-150-137.sdnglobal.com
64.30.150.138	PTR	64-30-150-138.sdnglobal.com
64.30.150.139	PTR	64-30-150-139.sdnglobal.com
64.30.150.146	PTR	64-30-150-146.sdnglobal.com
64.30.150.152	PTR	64-30-150-152.sdnglobal.com
64.30.150.153	PTR	64-30-150-153.sdnglobal.com
64.30.150.155	PTR	64-30-150-155.sdnglobal.com
64.30.150.179	PTR	64-30-150-179.sdnglobal.com
64.30.150.192	PTR	64-30-150-192.sdnglobal.com
64.30.150.194	PTR	64-30-150-194.sdnglobal.com
64.30.150.203	PTR	64-30-150-203.sdnglobal.com
64.30.151.8	PTR	64-30-151-8.sdnglobal.com
64.30.151.160	PTR	64-30-151-160.sdnglobal.com
64.30.151.162	PTR	64-30-151-162.sdnglobal.com
64.30.151.185	PTR	64-30-151-185.sdnglobal.com
64.30.151.210	PTR	64-30-151-210.sdnglobal.com
64.30.151.218	PTR	64-30-151-218.sdnglobal.com