Here is a site I have used to find what ISP owns the address.
http://www.arin.net/whois/index.html
It will not give the name of the individual user.
I suppose you could follow up from there if you desired.
I seem to recall that there are other sites for other countries/continents.
Perhaps someone here recalls them.
Bob Lendrim


At 11/3/2003, you wrote:
>Roberto,
>I'm almost certain that version 3 has this option. When the ZoneAlarm Pro
>Alert window pops up to tell you it has blocked access and shows an IP
>number, look for a "More Info" button. Clicking this will take you to the
>Zone Labs site with an "Overview" of the incident. Click the "Hacker ID" tab
>at the top and it has the information you're looking for. You can also click
>the map and it will show a map of where it's located.
>The latest ZoneAlarm Pro release is 4.0.146.029. I suggest you get it. Your
>version 3 key should work with version 4 (mine does).
>Sven Swanson, Sr.
>
>----- Original Message -----
>From: "Roberto Safora Romay" <[log in to unmask]>
>To: <[log in to unmask]>
>Subject: [PCSOFT] who is tries to reach my pc?
>I have zone Alarm Pro 3.1 installed. Some times the program blocks access
>from unknown IP addresses.
>How could I identify the source of such unauthorized efforts to get in my
>PC? I mean at least from what ISP they come.
>Any free software for this purpose. I use WXP Proffesional SP1.
>I´ve heard of IP trackers or identifiers.
>TIA  Roberto