there is also the ARIN Whois database to look up who owns an IP
http://www.arin.net/whois/index.html
ARIN also gives you contact info for ISP Whois to drill down within the larger ISPs to find out which client owns/uses that IP addy.
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there is also the ARIN Whois database to look up who owns an IP
http://www.arin.net/whois/index.html
ARIN also gives you contact info for ISP Whois to drill down within the larger ISPs to find out which client owns/uses that IP addy.
ARIN and tracert in the command prompt works like a charm. For a more in dept look at the whole process just look at my tutorial, not the best tutorial, but it will get the info accross