North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Who is announcing bogons?

  • From: Sean Donelan
  • Date: Tue Apr 29 21:43:35 2003 
On Tue, 29 Apr 2003 [email protected] wrote:
> > Looking at one log, the most persistant announcer of bogon space is
> > AS 4554 (Bill Manning), Net 39.0.0.0/8.
> >
> > I don't know Mr. Manning's intentions, malicious or otherwise.
>
> as has been stated on this list several times over the past few years...
>
> net 39 was left in my care by my previous boss.

The Cymru Team lists 39.0.0.0/8 as a bogon.

Its a serious problem.  Over the last two decades, records of
address assignments have been lost.  Yes, its just a 32-bit number (or
16-bit number or 128-bit number).  A missing registry record doesn't
cause a problem, unless someone starts blackholing routes or reusing
addresses.

While I think many of the bogons are mistakes, and some are due to
malicious activity; we need to recognize the limitations of our data
sources.  If people are going to start blackholing previously allocated
address space, or sub-delegations, our data isn't that great.  As the
saying goes, you can't prove a negative.  We can confirm a positive
registration.