Robtex

Up: 71.81.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 71.81.8.0/22
Down right: 71.81.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
71.81.9.123	PTR	71-81-9-123.static.hlrg.nc.charter.com
71.81.11.81	PTR	71-81-11-81.static.hlrg.nc.charter.com
71.81.13.1	A+PTR	71-81-13-1.static.hlrg.nc.charter.com
71.81.13.4	A	71-81-13-4.static.hlrg.nc.charter.com
71.81.13.5	A	71-81-13-5.static.hlrg.nc.charter.com
71.81.13.6	A	71-81-13-6.static.hlrg.nc.charter.com
71.81.13.13	A	71-81-13-13.static.hlrg.nc.charter.com
71.81.13.15	A	71-81-13-15.static.hlrg.nc.charter.com
71.81.13.17	A+PTR	71-81-13-17.static.hlrg.nc.charter.com
71.81.13.18	A+PTR	71-81-13-18.static.hlrg.nc.charter.com
71.81.13.19	A+PTR	71-81-13-19.static.hlrg.nc.charter.com
71.81.13.20	A	71-81-13-20.static.hlrg.nc.charter.com
71.81.13.24	A+PTR	71-81-13-24.static.hlrg.nc.charter.com
71.81.13.26	A+PTR	71-81-13-26.static.hlrg.nc.charter.com
71.81.13.28	A	71-81-13-28.static.hlrg.nc.charter.com
71.81.13.29	A	71-81-13-29.static.hlrg.nc.charter.com
71.81.13.34	A+PTR	71-81-13-34.static.hlrg.nc.charter.com
71.81.13.35	A+PTR	71-81-13-35.static.hlrg.nc.charter.com
71.81.13.36	A	71-81-13-36.static.hlrg.nc.charter.com
71.81.13.39	A	71-81-13-39.static.hlrg.nc.charter.com
71.81.13.41	A+PTR	71-81-13-41.static.hlrg.nc.charter.com
71.81.13.47	A	71-81-13-47.static.hlrg.nc.charter.com
71.81.13.49	A+PTR	71-81-13-49.static.hlrg.nc.charter.com
71.81.13.53	A	71-81-13-53.static.hlrg.nc.charter.com
71.81.13.55	A	71-81-13-55.static.hlrg.nc.charter.com
71.81.13.57	A+PTR	71-81-13-57.static.hlrg.nc.charter.com
71.81.13.64	A+PTR	71-81-13-64.static.hlrg.nc.charter.com
71.81.13.66	A+PTR	71-81-13-66.static.hlrg.nc.charter.com
71.81.13.68	A	71-81-13-68.static.hlrg.nc.charter.com
71.81.13.69	A	71-81-13-69.static.hlrg.nc.charter.com
71.81.13.75	A+PTR	71-81-13-75.static.hlrg.nc.charter.com
71.81.13.77	A	71-81-13-77.static.hlrg.nc.charter.com
71.81.13.83	A+PTR	71-81-13-83.static.hlrg.nc.charter.com
71.81.13.88	A+PTR	71-81-13-88.static.hlrg.nc.charter.com
71.81.13.89	A+PTR	71-81-13-89.static.hlrg.nc.charter.com
71.81.13.94	A	71-81-13-94.static.hlrg.nc.charter.com
71.81.13.97	A+PTR	71-81-13-97.static.hlrg.nc.charter.com
71.81.13.98	PTR	71-81-13-98.static.hlrg.nc.charter.com
71.81.13.102	A	71-81-13-102.static.hlrg.nc.charter.com
71.81.13.103	A	71-81-13-103.static.hlrg.nc.charter.com
71.81.13.116	A	71-81-13-116.static.hlrg.nc.charter.com
71.81.13.118	A	71-81-13-118.static.hlrg.nc.charter.com
71.81.13.121	A+PTR	71-81-13-121.static.hlrg.nc.charter.com
71.81.13.122	A+PTR	71-81-13-122.static.hlrg.nc.charter.com
71.81.13.123	A+PTR	71-81-13-123.static.hlrg.nc.charter.com
71.81.13.125	A	71-81-13-125.static.hlrg.nc.charter.com
71.81.13.130	A+PTR	71-81-13-130.static.hlrg.nc.charter.com
71.81.13.132	A	71-81-13-132.static.hlrg.nc.charter.com
71.81.13.148	A	71-81-13-148.static.hlrg.nc.charter.com
71.81.13.149	A	71-81-13-149.static.hlrg.nc.charter.com
71.81.13.150	A	71-81-13-150.static.hlrg.nc.charter.com
71.81.13.151	A	71-81-13-151.static.hlrg.nc.charter.com
71.81.13.155	A+PTR	71-81-13-155.static.hlrg.nc.charter.com
71.81.13.158	A	71-81-13-158.static.hlrg.nc.charter.com
71.81.13.160	A+PTR	71-81-13-160.static.hlrg.nc.charter.com
71.81.13.162	A+PTR	71-81-13-162.static.hlrg.nc.charter.com
71.81.13.169	A+PTR	71-81-13-169.static.hlrg.nc.charter.com
71.81.13.170	A+PTR	71-81-13-170.static.hlrg.nc.charter.com
71.81.13.172	A	71-81-13-172.static.hlrg.nc.charter.com
71.81.13.177	A+PTR	71-81-13-177.static.hlrg.nc.charter.com
71.81.13.182	A	71-81-13-182.static.hlrg.nc.charter.com
71.81.13.186	A+PTR	71-81-13-186.static.hlrg.nc.charter.com
71.81.13.191	A	71-81-13-191.static.hlrg.nc.charter.com
71.81.13.193	A+PTR	71-81-13-193.static.hlrg.nc.charter.com
71.81.13.195	A+PTR	71-81-13-195.static.hlrg.nc.charter.com
71.81.13.199	A	71-81-13-199.static.hlrg.nc.charter.com
71.81.13.202	A+PTR	71-81-13-202.static.hlrg.nc.charter.com
71.81.13.204	A	71-81-13-204.static.hlrg.nc.charter.com
71.81.13.205	A	71-81-13-205.static.hlrg.nc.charter.com
71.81.13.209	A+PTR	71-81-13-209.static.hlrg.nc.charter.com
71.81.13.212	A	71-81-13-212.static.hlrg.nc.charter.com
71.81.13.215	A	71-81-13-215.static.hlrg.nc.charter.com
71.81.13.218	A+PTR	71-81-13-218.static.hlrg.nc.charter.com
71.81.13.223	A	71-81-13-223.static.hlrg.nc.charter.com
71.81.13.224	A+PTR	71-81-13-224.static.hlrg.nc.charter.com
71.81.13.229	A	71-81-13-229.static.hlrg.nc.charter.com
71.81.13.230	A	71-81-13-230.static.hlrg.nc.charter.com
71.81.13.231	A	71-81-13-231.static.hlrg.nc.charter.com
71.81.13.237	A	71-81-13-237.static.hlrg.nc.charter.com
71.81.13.239	A	71-81-13-239.static.hlrg.nc.charter.com
71.81.13.240	A+PTR	71-81-13-240.static.hlrg.nc.charter.com
71.81.13.243	A+PTR	71-81-13-243.static.hlrg.nc.charter.com
71.81.13.254	A	71-81-13-254.static.hlrg.nc.charter.com
71.81.13.255	A	71-81-13-255.static.hlrg.nc.charter.com
71.81.14.98	PTR	71-81-14-98.static.hlrg.nc.charter.com
71.81.14.98	A	globalbridgeassoc.com
71.81.14.98	A	etchedglassbyable.com
71.81.14.186	A	remote.atkinsdts.com
71.81.14.227	A+PTR	mail.ionic-tech.com