Robtex

Up: 66.72.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.72.144.0/21
Down right: 66.72.152.0/21

IP	Type	Hostname
66.72.145.88	A	adsl-66-72-145-88.dsl.sfldmi.ameritech.net
66.72.153.198	A	adsl-66-72-153-198.dsl.sfldmi.ameritech.net
66.72.157.41	A	spamwall2.adtransport.com
66.72.157.66	A	sandproductscorp.com
66.72.159.2	PTR	adsl-66-72-159-2.dsl.sfldmi.ameritech.net