Re: dealing with bogon spam ?

[Leslie <leslie () craigslist org>]

I failed to mention we're seeing this from an unallocated /20 whose 
parent /8 is allocated to ARIN (and is partially in use)

Leslie

Leslie wrote:
> First off, I'm not certain if unallocated space in blocks less than a /8 
> is properly called bogon, so pardon my terminology if I'm incorrect.
>
> We're seeing a decent chunk of spam coming from an unallocated block of 
> address space.  We use CYMRU's great list of /8 bogon space to prevent 
> completely off the wall abuse, but the granularity stops at /8's. 
> Obviously, I've written the originating AS and its single upstream 
> provider (sadly without any response).  I'm not looking for a one time 
> solution for this issue however -- I'd like to permanently block (and 
> kick) anyone who's using unallocated space illegitimately.
>
> How have you dealt with this issue? Does anyone publish a more granular 
> listing of unallocated space? Does arin have this information somewhere 
> other than just probing any given ip via whois?
>
> Thanks!
> Leslie
> Craigslist Spam Hater