32-bit ASN acceptance by ISPs in ARIN region

Leo Vegoda leo.vegoda at icann.org
Mon Sep 23 14:41:44 UTC 2013


R. Benjamin Kessler wrote:

> I'd like to see an option for a larger private ASN block -
> 1K of private ASNs can be quite a pain in really large organizations.
> I have seen others mention this in the past - e.g.
> http://www.gossamer-threads.com/lists/cisco/nsp/158375
> But apparently there's not enough traction to cause movement.

In the 32-bit space there is:

4200000000-4294967294	Reserved for Private Use		[RFC6996]

which is considerably more than 1,000. The remaining unallocated 16-bit AS 
Numbers are 64000-64495.


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