Robtex

Up: 68.99.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 68.99.172.0/23
Down right: 68.99.174.0/23

IP	Type	Hostname
68.99.172.0	PTR	ip68-99-172-0.mc.at.cox.net
68.99.172.81	A+PTR	ip68-99-172-81.mc.at.cox.net
68.99.172.107	PTR	ip68-99-172-107.mc.at.cox.net
68.99.174.17	A+PTR	ip68-99-174-17.mc.at.cox.net
68.99.174.83	A	ip68-99-174-83.mc.at.cox.net
68.99.174.87	PTR	ip68-99-174-87.mc.at.cox.net
68.99.174.99	A+PTR	ip68-99-174-99.mc.at.cox.net
68.99.174.105	PTR	ip68-99-174-105.mc.at.cox.net
68.99.175.16	A	ip68-99-175-16.mc.at.cox.net
68.99.175.58	A	ip68-99-175-58.mc.at.cox.net