Redundant AS's

Hank Nussbacher hank at
Wed Mar 18 08:07:20 UTC 2009

At 08:18 AM 18-03-09 +0100, Henk Uijterwaal wrote:

>>It's a bit dated now, but the RIPE report, ASN MIA, sounds like what 
>>you're looking for...
>When I look at this more recently, the conclusion still seems to be
>valid: we'll run out of 16 bit ASN's somewhere in 2011 to 2013.  There
>are a lot of unused ASN's out there.  Recovering them will postpone the
>problem by a few years but it won't solve it.  The basic problem with
>recovery is how to decide if an ASN is really no longer used/needed.
>There is (still) no mechanism to do this.

Why not go after low lying fruit first?  If an ASN was assigned years ago 
and hasn't appeared in the RIB for the past year that ASN should be 
reclaimed.  Send warning emails to the registered contacts as well as to 
the assigning LIR and after 3 months - just reclaim it.


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