IP whois for adsl-69-211-15-160.dsl.chcgil.ameritech.net

AT&T Internet Services SBCIS-SIS80 (NET-69-208-0-0-1)
69.208.0.0 - 69.223.255.255
PPPoX Pool rback7-chcgil 072904-13-25 SBC06921100000020040729132406 (NET-69-211-0-0-1)
69.211.0.0 - 69.211.15.255

Have fun, unless he was using a proxy server to connect to my site.