whois Re: [Techtalk] Who to complain to?

[Daniel Richter]

 > How do I find out more, and, specifically, who to complain
 > to about this antisocial behaviour?

May I recommend SpamCop <http://spamcop.net>? Although its main purpose 
is reporting spam, you can simply give it an IP address and it will give 
you the abuse contacts.

-- 
    They've signed me up for every advertising campaign
    and mailing list there is. These people are out of
    their minds. They're harassing me.
        - spam tycoon Alan Ralsky, who was signed up for tons of
          (paper) junk mail after publicly proclaiming that
          he had no regrets about his spam empire.