SPAM, RE: Internic and there lame response

OK so what to do if their upstream does nothing? Like PBI

There are many other ways to track a spammer.

- Do nslookup on the IP that originated the spam (sometimes this takes a
bit of detective work to find what IP actually originated the spam).
- Traceroute to the originating IP. Email the ISP that is directly


PBI does more than most. There really aren't any backbones
  left who do nothing, (with the possible exception of UUnet,
  but that's a relatively recent occurance.)