We appreciate your concern regarding invalid clicks. Because IP addresses can be allocated from various sources, and due to the fact that valid clicks may be blocked as a result, we are not able to block IP addresses provided by publishers. Although we're unable to block IP addresses for you, there are ways that you can directly block suspicious IP addresses from visiting your site. We suggest that you reach out to your webmaster for further instructions.
If you'd like to visit the destination of an ad to view its content or to add it to your filter list, you can use the Google Publisher Toolbar, which allows you to view the ads that may show on any webpage and click them without worrying about invalid clicks being generated on your account.