Browser/IP information received:
IP address (assuming you're not behind a proxy)
Browser ID: "CCBot/2.0 (http://commoncrawl.org/faq/)"
Geographic IP lookup - where do the georeferencing databases think that you are located?
TOR check - is your [apparent] IP address in the list of TOR exit-nodes?
Blacklist check - does your IP address appear in any anti-spam blacklists