Robtex

Up: 68.66.76.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 68.66.76.0/25
Down right: 68.66.76.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.66.76.0	A+PTR	68-66-76-0.client.mchsi.com
68.66.76.1	A+PTR	68-66-76-1.client.mchsi.com
68.66.76.8	A+PTR	68-66-76-8.client.mchsi.com
68.66.76.10	A+PTR	68-66-76-10.client.mchsi.com
68.66.76.10	A	mail.mediacomcc.com
68.66.76.18	PTR	njtossnc04.mediacomcorp.com
68.66.76.23	PTR	njtossnc09.mediacomcorp.com
68.66.76.34	PTR	njtossnz11.mediacomcorp.com
68.66.76.35	PTR	njtossnz12.mediacomcorp.com
68.66.76.36	PTR	njtossnz13.mediacomcorp.com
68.66.76.37	PTR	njtossnz14.mediacomcorp.com
68.66.76.41	A+PTR	68-66-76-41.client.mchsi.com
68.66.76.42	PTR	njtossnc01-eth1.mediacomcorp.com
68.66.76.48	PTR	njtossnc07-eth1.mediacomcorp.com
68.66.76.52	A+PTR	68-66-76-52.client.mchsi.com
68.66.76.57	A+PTR	68-66-76-57.client.mchsi.com
68.66.76.58	A+PTR	68-66-76-58.client.mchsi.com
68.66.76.67	A+PTR	68-66-76-67.client.mchsi.com
68.66.76.68	A+PTR	68-66-76-68.client.mchsi.com
68.66.76.76	A+PTR	68-66-76-76.client.mchsi.com
68.66.76.80	A	mediacomuniversity.net
68.66.76.80	A	www.mediacomuniversity.net
68.66.76.85	PTR	njtobndv01.mcomdc.com
68.66.76.88	A+PTR	68-66-76-88.client.mchsi.com
68.66.76.90	A+PTR	68-66-76-90.client.mchsi.com
68.66.76.95	A+PTR	68-66-76-95.client.mchsi.com
68.66.76.96	A+PTR	68-66-76-96.client.mchsi.com
68.66.76.97	A+PTR	68-66-76-97.client.mchsi.com
68.66.76.98	A+PTR	68-66-76-98.client.mchsi.com
68.66.76.99	PTR	68-66-76-99.client.mchsi.com
68.66.76.99	A	www.mediacomcable.com
68.66.76.99	A	internetsupport.mediacomcc.com
68.66.76.102	PTR	njtoiwcv02.mcomdc.com
68.66.76.106	A+PTR	68-66-76-106.client.mchsi.com
68.66.76.107	A+PTR	68-66-76-107.client.mchsi.com
68.66.76.109	A+PTR	68-66-76-109.client.mchsi.com
68.66.76.110	A+PTR	68-66-76-110.client.mchsi.com
68.66.76.113	PTR	njtoextv03.mcomdc.com
68.66.76.120	A+PTR	68-66-76-120.client.mchsi.com
68.66.76.121	A+PTR	68-66-76-121.client.mchsi.com
68.66.76.122	PTR	68-66-76-122.client.mchsi.com
68.66.76.123	A+PTR	68-66-76-123.client.mchsi.com
68.66.76.124	A+PTR	68-66-76-124.client.mchsi.com
68.66.76.126	A+PTR	68-66-76-126.client.mchsi.com
68.66.76.134	A+PTR	68-66-76-134.client.mchsi.com
68.66.76.135	A+PTR	68-66-76-135.client.mchsi.com
68.66.76.137	PTR	njtocnrv01.mcomdc.com
68.66.76.139	PTR	njtodpev01.mcomdc.com
68.66.76.140	PTR	njtodpev02.mcomdc.com
68.66.76.145	A+PTR	njtodmiv01.mcomdc.com
68.66.76.151	A+PTR	68-66-76-151.client.mchsi.com
68.66.76.154	A+PTR	68-66-76-154.client.mchsi.com
68.66.76.156	A+PTR	68-66-76-156.client.mchsi.com
68.66.76.157	A+PTR	68-66-76-157.client.mchsi.com
68.66.76.162	A+PTR	68-66-76-162.client.mchsi.com
68.66.76.166	PTR	68-66-76-166.client.mchsi.com
68.66.76.166	A	www.mc22.net
68.66.76.166	A	mc22.net
68.66.76.173	A+PTR	68-66-76-173.client.mchsi.com
68.66.76.173	A	ihelp.mediacombb.net
68.66.76.177	A+PTR	68-66-76-177.client.mchsi.com
68.66.76.178	A+PTR	68-66-76-178.client.mchsi.com
68.66.76.180	A+PTR	68-66-76-180.client.mchsi.com
68.66.76.180	A	njtobndv01.mcomdc.com
68.66.76.183	A+PTR	68-66-76-183.client.mchsi.com
68.66.76.187	PTR	68-66-76-187.client.mchsi.com
68.66.76.187	A	sso.mediacomcable.com
68.66.76.189	A+PTR	68-66-76-189.client.mchsi.com
68.66.76.197	A+PTR	68-66-76-197.client.mchsi.com
68.66.76.199	A+PTR	68-66-76-199.client.mchsi.com
68.66.76.201	A+PTR	68-66-76-201.client.mchsi.com
68.66.76.205	A+PTR	68-66-76-205.client.mchsi.com
68.66.76.206	A+PTR	68-66-76-206.client.mchsi.com
68.66.76.212	A+PTR	68-66-76-212.client.mchsi.com
68.66.76.218	A+PTR	68-66-76-218.client.mchsi.com
68.66.76.221	A+PTR	68-66-76-221.client.mchsi.com
68.66.76.222	A+PTR	68-66-76-222.client.mchsi.com
68.66.76.223	A+PTR	68-66-76-223.client.mchsi.com
68.66.76.225	A+PTR	68-66-76-225.client.mchsi.com
68.66.76.226	A+PTR	68-66-76-226.client.mchsi.com
68.66.76.254	A+PTR	68-66-76-254.client.mchsi.com
68.66.76.255	A+PTR	68-66-76-255.client.mchsi.com