[dns-operations] unfounded showstopper assertions

Viktor Dukhovni ietf-dane at dukhovni.org
Mon Mar 6 21:49:31 UTC 2017

> On Mar 6, 2017, at 4:25 PM, Mark Andrews <marka at isc.org> wrote:
> In reality you can't prevent tlds being enumerated for active
> domains.  You look at resolver traffic from many places to build
> up a database of active names.  

Or, while .de, for example, does not make the full zone available
via ICANN's CZDS or equivalent, one can find ~7.4 million .de 2ld
sub-domains in


out of ~16.2 million domains:


there are likely other public sources that can be combined with this
to yield a large majority of the domains.


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