Welcome to WebmasterWorld Guest from 188.8.131.52
Forum Moderators: phranque
1. Contacting the 'abuse' address for the ISP is one route to take (may or may not get a response). May result in a few hosts getting fixed.
There may be some interest by Interpol or a military/intelligence anti-cyberterrorism organization (or they might be causing it). I would cantact an organization like this... I remember some big botnet just got shut down in the past couple months, you could try whoever was involved with that.