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Redundant AS's

On Wed, 18 Mar 2009, Hank Nussbacher wrote:
> 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...
>>> www.apnic.net/meetings/21/docs/sigs/routing/routing-pres-uijterwaal-asn-mia.ppt 
>> 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.
>> Henk
> 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.

How about just nailing everyone who has invalid contact info? That would 
certainly be incentive to get it updated. Nothing else seems to work.