Suspecious anycast prefixes

Joe Abley jabley at
Wed May 4 20:15:30 UTC 2011

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.


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