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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