[dns-operations] Mass deletion of .tw sub-domains?

[Florian Weimer]

* Viktor Dukhovni:

> Is anyone at liberty to shed some light on what transpired to account
> for such a large change?  The deleted domains do look rather "random"
> to me.  Did some sort of large-scale abuse get shut down?
>
> [ FWIW, below my signature is a lightly encoded sample of 200 randomly
>   chosen deleted .tw domains. ]

I did some checks on a few of those.  WHOIS is still populated, and
they seem to share name servers.  The names may be random, but they
seem to have *something* in common.