Per ARIN's statistics, there were 416 4-byte ASNs issued in CY2014. 12 were
returned to ARIN as non-useable. That means that here, on May 20 2015, we
should see most of the 404 4-byte ASNs registered in some copy of the DFZ. So
let's see!
Methodology:
- I downloaded 'delegated-arin-extended-latest', today's extended file
- I found exactly 421 4-byte ASNs with a registration date in 2014.
- I hopped on a Microsoft router and did:
show route advertising-protocol bgp [our IP address] aspath-regex
".*(65536-4294967295).*"
Interestingly, we found 39,293 prefixes announced or transiting 4-byte ASNs.
That's a lot more than expected.
- I then looked for all 421 registered 4-byte ASNs from CY2014 in the routing
table.
Results:
289 4-byte ASNs were found in my company's copy of the DFZ (69%)
132 4-byte ASNs were NOT found (31%)
David R Huberman
Principal, Global IP Addressing
Microsoft Corporation
> -----Original Message-----
> From: Gert Doering [mailto:[email protected]]
> Sent: Tuesday, May 19, 2015 11:45 AM
> To: David Huberman
> Cc: [email protected]
> Subject: Re: [address-policy-wg] 2014-03 Review Period extended until 19
> May 2015 (Remove Multihoming Requirement for AS Number Assignments)
>
> Hi,
>
> On Tue, May 19, 2015 at 04:32:42PM +0000, David Huberman wrote:
> > Each of these organizations stated issues with their transit providers
> > either unwilling or unable to accept the use of a 4-byte AS number by
> > a customer.
>
> I can see that transit providers might not be able to use 4-byte AS for their
> own network (because communities in <AS>:<action> notation just do not
> work then), but transit providers refusing customers with 4-byte ASNs in,
> what, 2014, is so totally lame...
>
> Thanks, David, for the update, though!
>
> Gert Doering
> -- proud holder of AS3.3 (AS196611 nowadays, far less pretty)
> --
> have you enabled IPv6 on something today...?
>
> SpaceNet AG Vorstand: Sebastian v. Bomhard
> Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann
> D-80807 Muenchen HRB: 136055 (AG Muenchen)
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