Domain names with leading digits (Re: Determining the basic approach)

Harald Tveit Alvestrand harald at
Mon May 5 22:15:20 CEST 2008

--On Monday, May 05, 2008 11:32:03 -0700 Paul Hoffman <phoffman at> 

>>> We read your document differently. It sure sounds like the rules in
>>> section 4 apply to all labels. Where is the text that says that
>>> they don't?
>> Section 1.1, the text I quoted in my first mail:
>>   When labels pass the test, they can be used with a minimal chance of
>>   these labels being displayed in a confusing way by a bidirectional
>>   display algorithm.  In order to achieve this stability, it is also
>>   necessary that the test be applied to labels occuring before or after
>>   the label containing right-to-left characters, which prohibits some
>>   LDH-labels that are permitted in other contexts.
> That's non-normative text. Section 4 is the normative text.

Thanks for pointing out that it can be read that way. I'll make section 1.1 
sound more normative in the next version; it was intended to be.


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