Robtex

Up: 66.72.80.0/20
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Down left: 66.72.80.0/22
Down right: 66.72.84.0/22

IP	Type	Hostname
66.72.80.1	PTR	66-72-80-1.lightspeed.jcsnms.sbcglobal.net
66.72.80.1	A	adsl-66-72-80-1.dsl.sbndin.ameritech.net
66.72.80.90	PTR	66-72-80-90.lightspeed.jcsnms.sbcglobal.net
66.72.87.125	A	adsl-66-72-87-125.dsl.sbndin.ameritech.net