Robtex

Up: 64.234.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.234.56.0/22
Down right: 64.234.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.234.56.9	PTR	host-64-234-56-9.nctv.com
64.234.56.18	PTR	host-64-234-56-18.nctv.com
64.234.56.19	PTR	host-64-234-56-19.nctv.com
64.234.56.26	PTR	host-64-234-56-26.nctv.com
64.234.56.27	PTR	host-64-234-56-27.nctv.com
64.234.56.35	PTR	host-64-234-56-35.nctv.com
64.234.56.40	PTR	host-64-234-56-40.nctv.com
64.234.56.50	PTR	host-64-234-56-50.nctv.com
64.234.56.117	PTR	host-64-234-56-117.nctv.com
64.234.56.142	PTR	host-64-234-56-142.nctv.com
64.234.56.171	PTR	host-64-234-56-171.nctv.com
64.234.56.202	PTR	host-64-234-56-202.nctv.com
64.234.56.208	PTR	host-64-234-56-208.nctv.com
64.234.56.216	PTR	host-64-234-56-216.nctv.com
64.234.56.218	PTR	host-64-234-56-218.nctv.com
64.234.56.219	PTR	host-64-234-56-219.nctv.com
64.234.56.224	PTR	host-64-234-56-224.nctv.com
64.234.56.226	PTR	host-64-234-56-226.nctv.com
64.234.58.242	PTR	host-64-234-58-242.nctv.com
64.234.59.0	PTR	host-64-234-59-0.nctv.com
64.234.59.2	A	tjmproperties.com
64.234.59.2	A	thelenrealestate.com
64.234.59.2	A	tjmrealtygroup.com
64.234.59.12	PTR	host-64-234-59-12.nctv.com
64.234.59.25	PTR	host-64-234-59-25.nctv.com
64.234.59.35	PTR	host-64-234-59-35.nctv.com
64.234.59.50	PTR	host-64-234-59-50.nctv.com
64.234.59.58	PTR	host-64-234-59-58.nctv.com
64.234.59.96	PTR	host-64-234-59-96.nctv.com
64.234.59.104	PTR	host-64-234-59-104.nctv.com
64.234.59.105	PTR	host-64-234-59-105.nctv.com
64.234.59.123	PTR	host-64-234-59-123.nctv.com
64.234.59.134	A	grainworship.com
64.234.59.135	A	tarvinsecurity.com
64.234.59.155	PTR	host-64-234-59-155.nctv.com
64.234.59.157	A	robofuzz.com
64.234.59.178	PTR	host-64-234-59-178.nctv.com
64.234.59.184	PTR	host-64-234-59-184.nctv.com
64.234.59.201	PTR	host-64-234-59-201.nctv.com
64.234.59.218	PTR	host-64-234-59-218.nctv.com
64.234.59.224	PTR	host-64-234-59-224.nctv.com
64.234.59.234	PTR	host-64-234-59-234.nctv.com
64.234.60.18	PTR	host-64-234-60-18.nctv.com
64.234.60.43	PTR	host-64-234-60-43.nctv.com
64.234.60.56	PTR	host-64-234-60-56.nctv.com
64.234.60.101	PTR	host-64-234-60-101.nctv.com
64.234.60.142	PTR	host-64-234-60-142.nctv.com
64.234.60.181	PTR	host-64-234-60-181.nctv.com
64.234.60.188	PTR	host-64-234-60-188.nctv.com
64.234.60.213	PTR	host-64-234-60-213.nctv.com
64.234.60.219	PTR	host-64-234-60-219.nctv.com
64.234.60.241	PTR	host-64-234-60-241.nctv.com
64.234.61.59	PTR	host-64-234-61-59.nctv.com
64.234.61.59	A	mail.daisyfairy.com
64.234.61.59	A	mail.mystictymes.com
64.234.62.2	PTR	host-64-234-62-2.nctv.com
64.234.62.11	PTR	host-64-234-62-11.nctv.com
64.234.62.16	PTR	host-64-234-62-16.nctv.com
64.234.62.25	PTR	host-64-234-62-25.nctv.com
64.234.62.42	PTR	host-64-234-62-42.nctv.com
64.234.62.49	PTR	host-64-234-62-49.nctv.com
64.234.62.72	PTR	host-64-234-62-72.nctv.com
64.234.62.96	PTR	host-64-234-62-96.nctv.com
64.234.62.98	PTR	host-64-234-62-98.nctv.com
64.234.62.106	PTR	host-64-234-62-106.nctv.com
64.234.62.113	PTR	host-64-234-62-113.nctv.com
64.234.62.122	PTR	host-64-234-62-122.nctv.com
64.234.62.131	PTR	host-64-234-62-131.nctv.com
64.234.62.154	PTR	host-64-234-62-154.nctv.com
64.234.62.155	PTR	host-64-234-62-155.nctv.com
64.234.62.163	PTR	host-64-234-62-163.nctv.com
64.234.62.178	PTR	host-64-234-62-178.nctv.com
64.234.62.202	PTR	host-64-234-62-202.nctv.com
64.234.62.209	PTR	host-64-234-62-209.nctv.com
64.234.62.210	PTR	host-64-234-62-210.nctv.com
64.234.62.225	PTR	host-64-234-62-225.nctv.com
64.234.62.232	PTR	host-64-234-62-232.nctv.com
64.234.62.233	PTR	host-64-234-62-233.nctv.com
64.234.62.241	PTR	host-64-234-62-241.nctv.com
64.234.62.249	PTR	host-64-234-62-249.nctv.com
64.234.63.2	PTR	host-64-234-63-2.nctv.com
64.234.63.40	PTR	host-64-234-63-40.nctv.com
64.234.63.42	PTR	host-64-234-63-42.nctv.com
64.234.63.59	PTR	host-64-234-63-59.nctv.com
64.234.63.64	PTR	host-64-234-63-64.nctv.com
64.234.63.65	PTR	host-64-234-63-65.nctv.com
64.234.63.73	PTR	host-64-234-63-73.nctv.com
64.234.63.80	PTR	host-64-234-63-80.nctv.com
64.234.63.82	PTR	host-64-234-63-82.nctv.com
64.234.63.89	PTR	host-64-234-63-89.nctv.com
64.234.63.90	PTR	host-64-234-63-90.nctv.com
64.234.63.98	PTR	host-64-234-63-98.nctv.com
64.234.63.131	PTR	host-64-234-63-131.nctv.com
64.234.63.144	PTR	host-64-234-63-144.nctv.com
64.234.63.145	PTR	host-64-234-63-145.nctv.com
64.234.63.161	PTR	host-64-234-63-161.nctv.com
64.234.63.162	PTR	host-64-234-63-162.nctv.com
64.234.63.184	PTR	host-64-234-63-184.nctv.com
64.234.63.186	PTR	host-64-234-63-186.nctv.com
64.234.63.210	PTR	host-64-234-63-210.nctv.com
64.234.63.211	PTR	host-64-234-63-211.nctv.com
64.234.63.219	PTR	host-64-234-63-219.nctv.com