Robtex

Up: 50.4.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 50.4.128.0/21
Down right: 50.4.136.0/21

IP	Type	Hostname
50.4.128.11	A	d4-50-11-128.col.wideopenwest.com
50.4.128.37	A	nathanvanderleest.com
50.4.128.60	A	joelswan.org
50.4.128.64	PTR	d4-50-64-128.col.wideopenwest.com
50.4.129.2	PTR	d4-50-2-129.col.wideopenwest.com
50.4.129.33	PTR	d4-50-33-129.col.wideopenwest.com
50.4.129.34	PTR	d4-50-34-129.col.wideopenwest.com
50.4.129.80	A	atimeinlight.com
50.4.129.80	A	timeinlight.com
50.4.130.19	PTR	d4-50-19-130.col.wideopenwest.com
50.4.130.60	A	charlespenn.net
50.4.131.1	PTR	d4-50-1-131.col.wideopenwest.com
50.4.131.2	PTR	d4-50-2-131.col.wideopenwest.com
50.4.131.32	A	d4-50-32-131.col.wideopenwest.com
50.4.131.34	A	d4-50-34-131.col.wideopenwest.com
50.4.131.36	A	d4-50-36-131.col.wideopenwest.com
50.4.131.51	PTR	d4-50-51-131.col.wideopenwest.com
50.4.131.76	A	d4-50-76-131.col.wideopenwest.com
50.4.131.155	A	d4-50-155-131.col.wideopenwest.com
50.4.131.166	A	d4-50-166-131.col.wideopenwest.com
50.4.131.196	A	d4-50-196-131.col.wideopenwest.com
50.4.131.200	A	d4-50-200-131.col.wideopenwest.com
50.4.131.235	A	d4-50-235-131.col.wideopenwest.com
50.4.131.236	A	d4-50-236-131.col.wideopenwest.com
50.4.132.70	A	mikefarris.biz
50.4.132.184	A	voidlock.myftp.org
50.4.132.197	A	d4-50-197-132.col.wideopenwest.com
50.4.132.216	A	shmagin.com
50.4.132.230	A	d4-50-230-132.col.wideopenwest.com
50.4.133.1	PTR	d4-50-1-133.col.wideopenwest.com
50.4.133.3	PTR	d4-50-3-133.col.wideopenwest.com
50.4.133.139	A	bubdandy.com
50.4.133.162	PTR	d4-50-162-133.col.wideopenwest.com
50.4.134.5	A	d4-50-5-134.col.wideopenwest.com
50.4.134.6	A	d4-50-6-134.col.wideopenwest.com
50.4.134.35	A+PTR	d4-50-35-134.col.wideopenwest.com
50.4.134.82	PTR	d4-50-82-134.col.wideopenwest.com
50.4.135.20	A	d4-50-20-135.col.wideopenwest.com
50.4.135.23	A	d4-50-23-135.col.wideopenwest.com
50.4.135.25	A	d4-50-25-135.col.wideopenwest.com
50.4.135.31	A	d4-50-31-135.col.wideopenwest.com
50.4.135.35	A+PTR	d4-50-35-135.col.wideopenwest.com
50.4.135.39	A	d4-50-39-135.col.wideopenwest.com
50.4.135.43	A	d4-50-43-135.col.wideopenwest.com
50.4.135.47	A	d4-50-47-135.col.wideopenwest.com
50.4.135.48	A+PTR	d4-50-48-135.col.wideopenwest.com
50.4.135.50	A+PTR	d4-50-50-135.col.wideopenwest.com
50.4.135.51	A+PTR	d4-50-51-135.col.wideopenwest.com
50.4.135.53	A	d4-50-53-135.col.wideopenwest.com
50.4.135.67	A+PTR	d4-50-67-135.col.wideopenwest.com
50.4.135.68	A	d4-50-68-135.col.wideopenwest.com
50.4.135.73	A	d4-50-73-135.col.wideopenwest.com
50.4.135.78	A	d4-50-78-135.col.wideopenwest.com
50.4.135.80	A+PTR	d4-50-80-135.col.wideopenwest.com
50.4.135.92	A	d4-50-92-135.col.wideopenwest.com
50.4.135.95	A	d4-50-95-135.col.wideopenwest.com
50.4.135.97	PTR	d4-50-97-135.col.wideopenwest.com
50.4.135.110	A	d4-50-110-135.col.wideopenwest.com
50.4.135.115	A+PTR	d4-50-115-135.col.wideopenwest.com
50.4.135.120	A	d4-50-120-135.col.wideopenwest.com
50.4.135.121	A	d4-50-121-135.col.wideopenwest.com
50.4.135.127	A	d4-50-127-135.col.wideopenwest.com
50.4.135.132	A	d4-50-132-135.col.wideopenwest.com
50.4.135.134	A	d4-50-134-135.col.wideopenwest.com
50.4.135.138	A	d4-50-138-135.col.wideopenwest.com
50.4.135.146	A+PTR	d4-50-146-135.col.wideopenwest.com
50.4.135.160	A	atmts.com
50.4.135.167	A	d4-50-167-135.col.wideopenwest.com
50.4.135.170	A	d4-50-170-135.col.wideopenwest.com
50.4.135.175	A	d4-50-175-135.col.wideopenwest.com
50.4.135.183	A	d4-50-183-135.col.wideopenwest.com
50.4.135.184	A	d4-50-184-135.col.wideopenwest.com
50.4.135.187	A	d4-50-187-135.col.wideopenwest.com
50.4.135.202	A	d4-50-202-135.col.wideopenwest.com
50.4.135.205	A	d4-50-205-135.col.wideopenwest.com
50.4.135.216	A	d4-50-216-135.col.wideopenwest.com
50.4.135.219	A	d4-50-219-135.col.wideopenwest.com
50.4.137.74	A	christopherraday.com
50.4.138.83	A+PTR	d4-50-83-138.col.wideopenwest.com
50.4.138.157	A	d4-50-157-138.col.wideopenwest.com
50.4.143.155	A	d4-50-155-143.col.wideopenwest.com
50.4.143.196	A	mail.bob-fund.com
50.4.143.196	A	bob-fund.com
50.4.143.201	A	d4-50-201-143.col.wideopenwest.com
50.4.143.226	A+PTR	d4-50-226-143.col.wideopenwest.com