[arin-ppml] ARIN 2-Byte ASN inventory and issuance

[Andrew Dul]

Do other members of the ARIN community believe that the current policy 
and operational practice is sufficient for now, or are there policy 
changes needed at this time?

Thanks,
Andrew

On 4/7/2016 12:24 PM, Scott Leibrand wrote:
> Thanks, John.
>
> It sounds to me like ARIN is already doing the right thing (saving 
> 2-byte ASNs for people who specifically want them), and that is 
> sufficient for the time being.  It does not appear that additional 
> restrictions on who may request a 2-byte ASN are necessary at this 
> time.  If at some point 5+ years down the road the rate of 2-byte ASN 
> demand starts to exceed the recovered supply and the 2-byte ASN 
> inventory is depleted, we can consider a waiting list and/or technical 
> requirements for requesting a 2-byte ASN at that time.
>
> Is there any other reason we need to consider taking action sooner?  
> Was there something else I'm missing that prompted ARIN staff to start 
> the consultation process around a 2-byte ASN waiting list?
>
> -Scott
>
> On Thu, Apr 7, 2016 at 11:44 AM, John Curran <jcurran at arin.net 
> <mailto:jcurran at arin.net>> wrote:
>
>     Folks -
>
>     Please forgive this omnibus email of information, but we've had
>     sufficient individual
>     questions for 2-byte ASN data that it simply made more sense to
>     provide one full
>     summary rather than reply to each question individually...
>
>     ARIN continues to have classic, 2-byte, AS numbers in inventory.
>     Over the last few
>     years, we have received small blocks of them in our new
>     delegations from the IANA,
>     obtained them from customer returns of AS numbers, or through
>     revocations of AS
>     numbers due to non-payment of registration fees.
>
>     Our last AS block delegation from IANA was on 29 April 2015.  We
>     received 99 2-byte
>     ASNs and 925 4-byte ASNs at that time, and do not expect to
>     receive any additional
>     2-byte ASNs from the IANA in future delegations.  The 2-byte ASNs
>     received from the
>     IANA in 2015 were added to the inventory and placed on hold.  The
>     reason that the
>     2-byte ASNs were put on hold is that was not responsible to issue
>     from the dwindling
>     quantity of these resources to parties that did not specifically
>     request such while we
>     were still receiving AS number requests specifically asking for
>     2-byte AS numbers.
>
>     As of today, we currently have the following 2-byte ASNs in ARIN
>     inventory:
>
>            387 2-byte AS numbers on hold (most were routed at some point)
>            535 2-byte AS numbers revoked
>            133 2-byte AS numbers returned
>
>       = 1,055 2-byte AS numbers returned/revoked/held (Total)
>
>     Customers requesting ASNs receive a 4-byte ASN by default. If a
>     request comes in
>     that specifically requests a 2-byte ASN, we inform the customer
>     that we have noted
>     their special request and that we will accommodate it at the
>     issuance phase of the
>     ticket process if we have 2-byte ASN available at that time.
>
>     Rate of issuance for 2-byte ASNs per month -
>
>         1/2015: 68
>         2/2015: 77
>         3/2015: 74
>         4/2015: 60
>         5/2015: 7
>         6/2015: 12
>         7/2015: 16
>         8/2015: 4
>         9/2015: 7
>         10/2015: 11
>         11/2015: 7
>         12/2015: 11
>         1/2016: 5
>         2/2016: 6
>         3/2016: 13
>
>     A waiting list will only be applicable after depletion of the
>     present 2-byte ASN inventory,
>     hence the following general run-out estimates are provided for
>     consideration:
>
>        - If we release all of the 2-byte ASNs from hold and issue ASNs
>     strictly from smallest
>          to largest, i.e. the practice prior to May 2015, it is likely
>     that the current inventory of
>          2-byte ASN’s would last somewhere between 6 to 12 months.
>
>       -  If we continue the current approach (wherein 4-byte ASNs are
>     issued by default and
>          2-byte ASNs are only issued upon special request), the
>     current inventory of 2-byte
>          ASNs would appear to last for many years (5+ years at present
>     rate).
>
>     I hope the above information helps in your policy development efforts!
>
>     Thank you,
>     /John
>
>     John Curran
>     President and CEO
>     American Registry for Internet Numbers (ARIN)
>
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