Tracking down a vandalizer who's faking his IP

["Jon S." <supercool9000 () hotmail com>]

Someone is vandalizing my friend's website.
When I checked the IP address, it seems like it's from another distant 
country and not much else information is provided.

Clearly, from what the vadalizer wrote, it appears he is from a local area 
and possibly someone he knows quite well.

I have sent an email to the owner of that segment of IP address but haven't 
heard anything for the past 2 months other than an automated reply.  Do most 
admins in other countries ignore requests to reveal source IP's when they 
feel it's just a vandalism and not a significant incidence?

Does anyone here have any experience tracking down a faker such as this
and could you provide any tips on how one can effectively talk to
and coordinate with the ISP's at the other end?

Thanks,
J

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