> On 3 Nov 2016, at 11:06, Tim Ruehsen <tim.ruehsen_at_gmx.de> wrote:
>
> Sure ?
>
> $ host strasse.de
> strasse.de has address 72.52.4.119
>
> $ idn2 straße.de
> xn--strae-oqa.de
>
> $ host xn--strae-oqa.de
> xn--strae-oqa.de has address 81.169.145.78
> xn--strae-oqa.de has IPv6 address 2a01:238:20a:202:1078::
> xn--strae-oqa.de mail is handled by 5 smtpin.rzone.de.

The requirement to register both domain names does not impose an obligation on the registrant to serve DNS for each. Without DNAME it would be pretty hard for the registry to impose such a requirement from a technical point of view.

--
Alex Bligh

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