Suspecious anycast prefixes

Yaoqing(Joey) Liu joey.liuyq at
Wed May 4 20:20:59 UTC 2011

On Wed, May 4, 2011 at 3:15 PM, Joe Abley <jabley at> wrote:

> On 2011-05-04, at 23:11, Yaoqing(Joey) Liu wrote:
> > Thanks for clarifying this, actually I have a few more blocks with four
> origin ASNs that I'm not positive if they are anycast prefixes. Please help
> distinguish them if the provide anycast service.
> You could probably get a good distance towards the answer to this by
> looking up the prefixes yourself using appropriate whois servers.
> Enumerating every prefix you see with more than one apparent origin and
> asking NANOG to type whois for you does not scale very well.

This is definitely a good idea, I'll do it right now. Thanks.


> Joe

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