Repeated Blacklisting / IP reputation

Martin Hannigan martin at
Thu Sep 10 03:41:26 UTC 2009

On Wed, Sep 9, 2009 at 11:30 PM, Leo Vegoda <leo.vegoda at> wrote:

> On Sep 9, 2009, at 7:18 PM, Alex Lanstein wrote:
> > Along the same lines, I noticed that the worst Actor in recent
> > memory (McColo - AS26780) stopped paying their bills to ARIN and
> > their addresses have been returned to the pool.
> >
> > It's my opinion that a very select number of CIDR blocks (another
> > example being the ones belonging to Cernel/InternetPath/Atrivo/etc,
> > if it were ever fully extinguished) are, and forever will be,
> > completely toxic and unusable to any legitimate enterprise.
> > Arguments could be made that industry blacklists can and should be
> > more flexible, but from the considerably more innocuous case in this
> > thread, that is apparently not the modus operandi
> Putting these addresses back into use does not mean that they have to
> be allocated to networks where they'll number mail servers. ARIN staff
> is doubtless aware of the history of these blocks and will presumably
> do their best to allocate them to networks that aren't intended to
> host mail servers.
> Regards,
> Leo

Not sure when ICANN got into the business of economic bailouts, but the
mechanism that ICANN has defined seems patently unfair. Determining who is
worthy of allocations based on a class without community input into a policy
debate is "bad".

ObOps: Chasing down all of this grunge ain't cheap or fair.



Martin Hannigan                               martin at
p: +16178216079
Power, Network, and Costs Consulting for Iceland Datacenters and Occupants

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