Robtex

Up: 68.54.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 68.54.192.0/20
Down right: 68.54.208.0/20

IP	Type	Hostname
68.54.192.192	PTR	c-68-54-192-192.hsd1.fl.comcast.net
68.54.192.233	PTR	c-68-54-192-233.hsd1.tn.comcast.net
68.54.193.41	A	c-68-54-193-41.hsd1.fl.comcast.net
68.54.193.128	A	c-68-54-193-128.hsd1.fl.comcast.net
68.54.193.174	A	c-68-54-193-174.hsd1.fl.comcast.net
68.54.193.184	A	c-68-54-193-184.hsd1.fl.comcast.net
68.54.193.192	PTR	c-68-54-193-192.hsd1.fl.comcast.net
68.54.197.97	PTR	c-68-54-197-97.hsd1.tn.comcast.net
68.54.197.228	A	c-68-54-197-228.hsd1.tn.comcast.net
68.54.198.61	A+PTR	c-68-54-198-61.hsd1.tn.comcast.net
68.54.202.209	PTR	c-68-54-202-209.hsd1.tn.comcast.net
68.54.203.98	PTR	c-68-54-203-98.hsd1.fl.comcast.net
68.54.205.119	A+PTR	c-68-54-205-119.hsd1.tn.comcast.net
68.54.206.48	A+PTR	c-68-54-206-48.hsd1.ga.comcast.net
68.54.206.105	A+PTR	c-68-54-206-105.hsd1.ga.comcast.net
68.54.206.105	A	my.inerdzcloud.com
68.54.206.105	A	inerdzcloud.com
68.54.207.40	A+PTR	c-68-54-207-40.hsd1.ga.comcast.net
68.54.210.226	A+PTR	c-68-54-210-226.hsd1.in.comcast.net
68.54.211.5	A+PTR	c-68-54-211-5.hsd1.in.comcast.net
68.54.211.206	A+PTR	c-68-54-211-206.hsd1.in.comcast.net
68.54.211.252	A	lilyne.com
68.54.211.252	A	loganme.com
68.54.212.244	A	quaddog.com
68.54.212.244	A	campkendall.com
68.54.214.114	A	mail.southportchurch.org
68.54.215.60	PTR	c-68-54-215-60.hsd1.in.comcast.net
68.54.215.95	A+PTR	c-68-54-215-95.hsd1.in.comcast.net
68.54.215.95	A	orangeninja1.com
68.54.215.174	A+PTR	c-68-54-215-174.hsd1.in.comcast.net
68.54.216.45	A+PTR	c-68-54-216-45.hsd1.in.comcast.net
68.54.216.45	A	srv.medfyz.com
68.54.216.45	A	medfyz.com
68.54.216.63	A+PTR	c-68-54-216-63.hsd1.in.comcast.net
68.54.216.111	A+PTR	c-68-54-216-111.hsd1.in.comcast.net
68.54.216.245	A+PTR	c-68-54-216-245.hsd1.in.comcast.net
68.54.217.43	A	c-68-54-217-43.hsd1.in.comcast.net
68.54.217.147	A+PTR	c-68-54-217-147.hsd1.in.comcast.net
68.54.217.245	A+PTR	c-68-54-217-245.hsd1.in.comcast.net
68.54.218.11	PTR	c-68-54-218-11.hsd1.in.comcast.net
68.54.218.79	A	gregofamily.org
68.54.219.123	A+PTR	c-68-54-219-123.hsd1.in.comcast.net
68.54.219.123	A	edwardend.com
68.54.220.175	A+PTR	c-68-54-220-175.hsd1.in.comcast.net
68.54.221.118	A+PTR	c-68-54-221-118.hsd1.in.comcast.net
68.54.221.131	A	wobby.net
68.54.222.27	A+PTR	c-68-54-222-27.hsd1.in.comcast.net
68.54.222.242	PTR	c-68-54-222-242.hsd1.in.comcast.net
68.54.222.246	A+PTR	c-68-54-222-246.hsd1.il.comcast.net
68.54.223.1	A+PTR	c-68-54-223-1.hsd1.in.comcast.net
68.54.223.3	PTR	c-68-54-223-3.hsd1.in.comcast.net
68.54.223.5	A	c-68-54-223-5.hsd1.in.comcast.net
68.54.223.7	A	c-68-54-223-7.hsd1.in.comcast.net
68.54.223.11	A	c-68-54-223-11.hsd1.in.comcast.net
68.54.223.45	A	c-68-54-223-45.hsd1.in.comcast.net
68.54.223.46	A	c-68-54-223-46.hsd1.in.comcast.net
68.54.223.49	A	c-68-54-223-49.hsd1.in.comcast.net
68.54.223.52	A	c-68-54-223-52.hsd1.in.comcast.net
68.54.223.64	A+PTR	c-68-54-223-64.hsd1.in.comcast.net
68.54.223.69	A	c-68-54-223-69.hsd1.in.comcast.net
68.54.223.76	A	c-68-54-223-76.hsd1.in.comcast.net
68.54.223.79	A	c-68-54-223-79.hsd1.in.comcast.net
68.54.223.100	A	c-68-54-223-100.hsd1.in.comcast.net
68.54.223.112	A	c-68-54-223-112.hsd1.in.comcast.net
68.54.223.114	A	c-68-54-223-114.hsd1.in.comcast.net
68.54.223.119	A	c-68-54-223-119.hsd1.in.comcast.net
68.54.223.132	A	c-68-54-223-132.hsd1.in.comcast.net
68.54.223.137	A	c-68-54-223-137.hsd1.in.comcast.net
68.54.223.138	A	c-68-54-223-138.hsd1.in.comcast.net
68.54.223.150	A	c-68-54-223-150.hsd1.in.comcast.net
68.54.223.165	A	c-68-54-223-165.hsd1.in.comcast.net
68.54.223.168	A	c-68-54-223-168.hsd1.in.comcast.net
68.54.223.173	A	c-68-54-223-173.hsd1.in.comcast.net
68.54.223.174	A	c-68-54-223-174.hsd1.in.comcast.net
68.54.223.193	A+PTR	c-68-54-223-193.hsd1.in.comcast.net
68.54.223.195	A+PTR	c-68-54-223-195.hsd1.in.comcast.net
68.54.223.197	A	c-68-54-223-197.hsd1.in.comcast.net
68.54.223.207	A	c-68-54-223-207.hsd1.in.comcast.net
68.54.223.226	A+PTR	c-68-54-223-226.hsd1.in.comcast.net
68.54.223.229	A	c-68-54-223-229.hsd1.in.comcast.net
68.54.223.230	A	c-68-54-223-230.hsd1.in.comcast.net
68.54.223.237	A	c-68-54-223-237.hsd1.in.comcast.net