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Re: [anti-spam-wg@localhost] Proposal: list of unassigned IP space

  • From: Bruce Campbell < >
  • Date: Tue, 4 Feb 2003 11:21:01 +0100 (CET)

On Mon, 3 Feb 2003, furio ercolessi wrote:

> I was wondering whether there is a way to know, by automatic methods
> and on a (say) daily basis, what are the IP blocks in the RIPE area
> which are not assigned to anyone at present, as far as the registry
> knows.  If not, I propose to make such a list available.  People could
> download it and use it to filter mail, or nullroute, or whatever.

This was recently brought up by Geoff Huston around this time last year at
APRICOT, and has been the subject of internal RIR discussions since.

Philip Smith mentioned a working instance of this (an unallocated list
available via EBGP) during his presentation at the EOF last week.

                             Bruce Campbell                            RIPE
                   Systems/Network Engineer                             NCC
        - PGP562C8B1B             Operations/Security

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