CrawlTrack, webmaster dashboard.
Web analytic and SEO
CrawlProtect, your website safety.
Protection against hacking, spam and content theft
Two php/MySQL scripts, free and easy to install
The tools you need to manage and keep control of your site.
You can here use that tool to find more information about an IP address. You will have information regarding the country of origin, but also if that IP has been detected by the CrawlTrack installed on that site as a crawler or as a hacker. This could help you to take a decision regarding the ban of that IP on your own site.