draft-liman-tld-names-00.txt and bidi

Tina Dam tina.dam at icann.org
Mon Mar 9 23:37:39 CET 2009

Some of this has to do with the fact that the 'TLD string criteria" for new TLDs reads:

- no leading or trailing digits (in any script)

As RFC 1123 is being revised to allow IDNs (including digits as digits appear in the A-labels) this topic came up.

Please be aware that parts of the community want digits in top-level labels, and so if there is a good technical solution for banning digits in top-level labels, the above requirement may be changed to:

- no leading or trailing digit in labels that contains characters with right-to-left directionality, or will introduce such at second level.

> -----Original Message-----
> From: idna-update-bounces at alvestrand.no [mailto:idna-update-
> bounces at alvestrand.no] On Behalf Of Patrik Fältström
> Sent: Saturday, March 07, 2009 6:19 AM
> To: Martin Duerst
> Cc: Andrew Sullivan; idna-update at alvestrand.no; Vint Cerf
> Subject: Re: draft-liman-tld-names-00.txt and bidi
> On 7 mar 2009, at 13.50, Martin Duerst wrote:
> > But there is actually
> > a certain ammount of scariness already in the case of (letter only,
> > single direction) labels of both directions being used in one and the
> > same domain name.
> That part we know about, but there is not much we can do about it. And
> we have talked about mixed directionality on codepoints within a label
> as part of the bidi spec/discussions for eons, and we could probably
> discuss that for another 5 years.... :-P
> Once again, and specifically here, I think we should go with a strict
> rule. I am not the one that call ICANN saying they have to revoke the
> application for a TLD after the applicant has paid whatever it is
> ($135k still?) only for sending in the application. Phew...
>     Patrik

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