[UA-discuss] Store domain in Punycode or Unicode?

Chaals Nevile chaals at yandex.ru
Wed Apr 4 17:47:58 UTC 2018

I agree with André on the general principle - if I were building a new  
system that is how I would approach the question.

That said, I think Carolyn has recognised the scenario, and accounted for  

What you choose to do in your back-end is really a question of where you  
want to invest effort.

It is clear the world is moving toward UTF-8 - We recently landed a change  
in HTML that would mean the only valid character set for HTML 5.3 is  
UTF-8. But there are various steps along the way, much as there are to EAI.

So long as you have anticipated the requirements of developers looking at  
content as well as end users, I think Microsoft should feel free to  
implement their systems according to their particular needs and goals...


On Wed, 04 Apr 2018 13:08:57 +0200, Dr Ajay Data <ajay at data.in> wrote:

> +1 Andre..
> In XgenPlus Email Server, we store all domains in Unicode only and  
> that`s the way to go.  There are >many benefits.
> In this ever changing and fast paced world, Who knows you may have xn--  
> domains allowed :)
> visit www.xgenplus.com
> -----
> From: Andre Schappo <A.Schappo at lboro.ac.uk>  MailId : [80351250]
> To: "ua-discuss at icann.org" <ua-discuss at icann.org>
> Subject: Re: [UA-discuss] Store domain in Punycode or Unicode?
> Date: 04 Apr 2018 02:39:51 PM
> I think the Unicode form should be stored . My reasons for recommending  
> this is a little different .
> Mostly, I use MySQL and phpMyAdmin for my database work. Storing IDNs  
> and/or EAI addresses in >Unicode form has advantages.
> ① I can search by constructing an SQL query in phpMyAdmin. eg all IDNs  
> which contain 食品
> ② I can learn a lot by visual inspection eg I can readily identify text  
> being in Korean, Thai, >Sinhala, Chinese, Arabic, Cyrillic scripts
> I could not do either of the above if only the punycode form is stored.
> Basically, people can relate to the Unicode form and not the punycode  
> form. So, if it involves >people, store in the Unicode form.
> Actually, there is one punycode label I always recognise, which is  
> .xn--fiqs8s😀 xn--fiqs8s = 中国 = >China. I recognise it because I have  
> seen it so many times and I remember when it went live as I >posted to  
> IDNforums idnforums.com/forums/26659-china-idn-cctlds-are-live.html That  
> is the only >punycode label I recognise.
> André Schappo

Chaals: Charles (McCathie) Nevile    find more at https://yandex.com
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