[arin-ppml] Draft Policy 2010-1: Waiting List for Unmet IPv4 Requests

Scott Leibrand scottleibrand at gmail.com
Wed Jan 27 18:06:13 EST 2010

On 1/27/2010 2:32 PM, George Bonser wrote:
> Which brought to mind something that is related.  I have not been on
> this list very long. Has there been discussion of some mechanism for
> recovery of issued but unused resources?  By this I mean address blocks
> that are no longer in use because the company involved no longer exists
> or blocks that have never been put into service.  A check of ipv4 PI
> blocks that have been issued but not advertized on the Internet for more
> than a year might be a place to start.
> I say this because I recently realized that a company I once worked for
> which had gone out of business still had a block of addresses and an ASN
> assigned to them so I contacted ARIN in order that the resources could
> be recovered for reuse.  But I can't help but wonder how large a pool
> exists of allocated but unused resources.

Yes, existing policy does allow ARIN to reclaim/recover/revoke 
non-legacy address space for various reasons, including non-payment of 
fees, an organization going out of business (and not transferring the 
assets justifying the addresses to an acquiring organization), or a 
determination that the address space is no longer justified under 
current policies.

One particular policy of interest is NRPM section 12: 

Legacy space (space allocated before the creation of ARIN, and not under 
RSA) is an entirely different can of worms.


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