SPAM stats

Three weeks ago, after the large amount of comment-spam we were getting, I set it up to record spam attempts in the database. I've created a new known spammers page with the results.

For individual IP addresses, TELEFONICA DE ESPANA is currently winning with 1085 attempts, easily beating Microsoft into 5th place (just 151 attempts). I suspect the picture changes if we group by organisation though, since many of them are using dynamic IP addresses. Any PERL hackers want to write a script to run the results through whois so we can see a proper breakdown?