Well, ok. Sounds reasonable. One other method that is useful. Run: Start -> Run -> cmd tracert
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or to any local web site. The first entry in the traceroute list is your local router. The 2nd is the gateway IP address at the ISP. Use:
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lookup the owner of the gateway IP address. That will be the ISP.
Also, if you have XP or W2K and want to send a message to the owner, try to determine their IP address. Then run: Start -> Run -> cmd net view (list of Windoze machines) net send machine_name "Hello? Anyone there?"