[arin-ppml] ARIN-2012-3: ASN Transfers - Last Call

John Curran jcurran at arin.net
Wed May 9 21:16:20 EDT 2012

On May 9, 2012, at 6:01 PM, Owen DeLong wrote:
> Actually, Geoff's numbers only suggest that there are ≤8259 recoverable
> numbers. They provide no lower bound whatsoever on the number.

That is correct.  

> The mere fact that a number does not appear in a routing table visible
> to Geoff Huston's research in no way indicates that it is not fully utilized
> in a context which is not visible to Geoff and which still requires global
> uniqueness.

Agreed.  While I have heard of a few AS numbers over the years being used in
completely private routing situations, there is no clear method for determining 
that which is "not visible" by definition.


John Curran
President and CEO

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