How to tell if something is anycasted?

David Hubbard dhubbard at
Tue May 16 22:05:10 UTC 2006

So I'm looking at a company who offers anycasted DNS;
how do I tell if it's really anycasted?  Just hop on
different route servers to see if I can find different
AS paths and then do traceroutes to see if they suggest
the packets are not ending in the same location?
>From my routers' perspective I don't see a difference,
but then I don't think I should, correct?



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