Robtex

Up: 70.40.176.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 70.40.180.0/23
Down right: 70.40.182.0/23

IP	Type	Hostname
70.40.181.163	PTR	dsl-user.acndigital.net
70.40.182.90	PTR	dsl-user.acndigital.net
70.40.183.1	PTR	dsl-user.acndigital.net
70.40.183.81	PTR	dsl-user.acndigital.net
70.40.183.113	PTR	dsl-user.acndigital.net