How to tell if something is anycasted?

Peter Boothe peter at
Thu May 18 07:36:33 UTC 2006

> > you can do
> > 	dig hostname.bind chaos txt
> > And the response should include a line like
> > hostname.bind.          0       CH      TXT     ""

On Wed, 17 May 2006 bmanning at wrote:

> well Peter, ONE root server operator has that practice.  Others have
> different practices regarding anycast.

DNS roots c, f, i, j, k, and m all do something like that, and last I
checked those were all the anycasted DNS roots.  But more may have become
so since I last checked.  It's true that they don't have to do it, but
it's a common enough convention for all the root DNS operators seem to
have agreed on it, and I've been told that DNS root ops is a highly
contentious subject, so any agreement at all is kind of a nice thing to

Or am I misunderstanding what you are saying?

This is, of course, somewhat off the subject of whether the original
provider in question does that - they may or may not, and the only way to
know is to test and find out.  Or ask them.


Peter Boothe
PhD Student                         "Young man, you think you're very
Computer Science                    smart, but it's turtles all the way
University of Oregon                down!"

More information about the NANOG mailing list