Is it permissible to advertise number resources allocated by one RIR to a ISP in a region governed by a different RIR? Practical?

Leo Bicknell bicknell at
Wed Feb 9 15:23:43 CST 2011

In a message written on Wed, Feb 09, 2011 at 02:59:31PM -0600, Crooks, Sam wrote:
> Is it permissible, from a policy perspective, for a multi-homed end user
> to announce the numbering resource allocation received from one RIR (for
> discussion purposes, let's say ARIN) to upstream service providers in a
> different region (for example, in the RIPE region)?

There are probably thousands if not tens of thousands of prefixes
announced in multiple regions, or even just different regions then
they were allocated.  Perfectly normal.

       Leo Bicknell - bicknell at - CCIE 3440
        PGP keys at
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