Robtex

Up: 66.20.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.20.88.0/22
Down right: 66.20.92.0/22

IP	Type	Hostname
66.20.88.235	A+PTR	adsl-66-20-88-235.mem.bellsouth.net
66.20.91.27	A	adsl-66-20-91-27.mem.bellsouth.net
66.20.92.188	A	adsl-66-20-92-188.mem.bellsouth.net
66.20.92.225	PTR	adsl-66-20-92-225.mem.bellsouth.net
66.20.92.240	A	adsl-66-20-92-240.mem.bellsouth.net