I need to prove I was using my ISP at a certain period: Last year from Feb 2011 to Aug 2011. Is there any log on my PC ?
closed as not a real question by Canadian Luke, Xavierjazz, iglvzx, Diogo, Paul Jul 17 '12 at 1:07
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E-mails you received, or sent to other people, will contain the IP address of your ISP's e-mail server, proving that they passed through the ISP's network. And for e-mails you sent, they will contain the IP address that was temporarily issued to you, which will be part of the block controlled by your ISP.
To see this information you need to inspect the MIME headers.
Also, if you used an online financial site, such as online banking, it is likely that the web server recorded your IP address.
In the end, your computer is the last place you should look for evidence, because it's under your control and might be tampered with. IP address logs in the hands of other companies are much more believable.
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