Robtex

Up: 64.139.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.139.252.0/23
Down right: 64.139.254.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.139.252.10	A+PTR	host-64-139-252-10.nctv.com
64.139.252.20	A+PTR	host-64-139-252-20.nctv.com
64.139.252.64	A+PTR	host-64-139-252-64.nctv.com
64.139.252.94	A+PTR	host-64-139-252-94.nctv.com
64.139.252.153	A	host-64-139-252-153.nctv.com
64.139.252.160	A+PTR	host-64-139-252-160.nctv.com
64.139.252.163	A+PTR	host-64-139-252-163.nctv.com
64.139.252.165	A+PTR	host-64-139-252-165.nctv.com
64.139.252.187	A+PTR	host-64-139-252-187.nctv.com
64.139.252.215	A	host-64-139-252-215.nctv.com
64.139.252.223	A+PTR	host-64-139-252-223.nctv.com
64.139.252.223	PTR	mail.potatoes.com
64.139.252.236	A+PTR	host-64-139-252-236.nctv.com
64.139.253.4	A	ntserver.agtcpa.com
64.139.253.4	A	host-64-139-253-4.nctv.com
64.139.253.5	PTR	mtshastaca.gov
64.139.253.31	A	host-64-139-253-31.nctv.com
64.139.253.62	A+PTR	host-64-139-253-62.nctv.com
64.139.253.82	A	host-64-139-253-82.nctv.com
64.139.253.135	A+PTR	host-64-139-253-135.nctv.com
64.139.253.141	A+PTR	host-64-139-253-141.nctv.com
64.139.253.141	A	mail.mpiins.com
64.139.253.162	A+PTR	host-64-139-253-162.nctv.com
64.139.253.188	A+PTR	host-64-139-253-188.nctv.com
64.139.253.194	A+PTR	host-64-139-253-194.nctv.com
64.139.253.200	A	host-64-139-253-200.nctv.com
64.139.253.202	A	host-64-139-253-202.nctv.com
64.139.253.222	A	host-64-139-253-222.nctv.com
64.139.253.222	A	rainville.net
64.139.253.222	A	shastarain.com
64.139.254.0	A+PTR	host-64-139-254-0.nctv.com
64.139.254.14	PTR	mail.glenn-davis.com
64.139.254.23	A	host-64-139-254-23.nctv.com
64.139.254.34	PTR	host-64-139-254-34.vyvebroadband.net
64.139.254.34	A	occ-0-3339-2433.1.nflxso.net
64.139.254.34	A	host-64-139-254-34.nctv.com
64.139.254.35	PTR	host-64-139-254-35.nctv.com
64.139.254.35	A	occ-0-3339-2433.1.nflxso.net
64.139.254.35	A	occ-0-3339-987.1.nflxso.net
64.139.254.38	A+PTR	host-64-139-254-38.nctv.com
64.139.254.88	A+PTR	host-64-139-254-88.nctv.com
64.139.254.111	A+PTR	host-64-139-254-111.nctv.com
64.139.254.193	A	host-64-139-254-193.nctv.com
64.139.254.199	A	base.patrirev.org
64.139.254.255	A+PTR	host-64-139-254-255.nctv.com
64.139.255.190	A	mail.adga.org