Robtex

Up: 66.80.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.80.64.0/23
Down right: 66.80.66.0/23

IP	Type	Hostname
66.80.64.170	PTR	trafficfiend.com
66.80.65.148	PTR	flowcontrol.com
66.80.65.244	A+PTR	ip-66-80-65-244.sea.megapath.net
66.80.66.122	PTR	ip-66-80-66-122.dsl.sea.megapath.net
66.80.66.122	A	mail.mrlh.org
66.80.66.211	A	ip-66-80-66-211.dsl.sea.megapath.net
66.80.67.34	A+PTR	ip-66-80-67-34.dsl.sea.megapath.net