Re: Suspecious anycast prefixes

["Yaoqing(Joey) Liu" <joey.liuyq () gmail com>]

On Thu, May 5, 2011 at 2:35 AM, Bill Woodcock <woody () pch net> wrote:
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> On May 4, 2011, at 8:23 PM, Yaoqing(Joey) Liu wrote:
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> > Hi NANOG,
> >
> > I manually extracted the origins and their org info for the announced
> > block of prefixes. All these prefixes were observed being originated
> > by at most four ASNs simultaneously. I suspect they provide anycast or
> > IXP service, but not positive. Please confirm my conjecture if you
> > know them.
>
> The IXP subnets are here:
>
> http://www.pch.net/ixpdir/ip_city_country.pl

We're using these IXP prefixes and they are very helpful, but I'm
afraid they are not complete. For example, I couldn't find any IXP
prefix from the mainland of China, such as Beijing and Shanghai.

Yaoqing
>                                -Bill
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