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[AfriNIC-rpd] RE:AFPUB-2011-v4-003-draft-02 - Limited Out of RegionAllocation of IPv4 Resources - of Legacy Space

Owen DeLong owen at
Tue May 10 05:07:30 UTC 2011

I believe this is from a special class of legacy addresses that occurred
towards the very end of the legacy period.

An experiment was tried where the InterNIC delegated large blocks to ISPs
who subsequently took care of assigning the addresses to their customers.
However, prior to CIDR, these assignments to customers were "portable"
and it was expected that the customer would take them with them, just
as if they had gotten them from InterNIC. Later with the introduction of
CIDR, the concept of non-portable addresses emerged. Non-portable
is what we now expect of all addresses issued by ISPs, but, it was not
always thus.

I don't think this in any way defines the standards of the relationship
between ISPs and InterNIC or ISPs and RIRs with regards to their
receipt of legacy space.


On May 9, 2011, at 9:11 PM, Andrew Alston wrote:

> Hi McTim,
> I've been doing some digging as promised, and I have to start this email
> stressing again that the return of space by the organization for which I
> work was done before my time, and I am simply repeating what I have
> found from a bit of research.  I do not claim that what is said below
> represents any official position by TENET on the subject.
> Firstly, the original announcement about this was made here: 
> Now, there are some interesting points to be raised from this
> announcement which was posted by Adiel.
> Notably:
> No current assignments from these blocks to any end user organisation
> are affected by this change.  In particular, AfriNIC acknowledges and
> will respect the portability of such assignments. To perform its role
> as a registry, AfriNIC will contact holders of prefixes in the related
> blocks in order to get the correct contact information so that these
> assignments can be properly registered in the public whois database.
> The above is interesting, particularly when you look at the second
> sentence, AfriNIC in that announcement acknowledged the portability of
> legacy space, and therefore in my reading of that, implies that such
> space can be transferred between organizations at will.  But that's just
> my reading of it.
> As to the reasons why the space was returned, I think the announcement
> adequately deals with this, and based on that announcement, I do not
> believe any precedents were set, the return of space was a voluntary
> action based on the nature of TENET's business and our function, rather
> than us returning the space because it was not used.
> Thanks
> Andrew 
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