[UA-discuss] IANA IDN Tables

Mark Svancarek marksv at microsoft.com
Mon Feb 26 17:30:38 UTC 2018

コ andム  are katakana characters, so only examples 1 and 3 are valid from a language perspective.   Those characters do not exist within hiragana and I do not believe they exist as standalone Chinese characters, either.

From: UA-discuss <ua-discuss-bounces at icann.org> On Behalf Of Jim DeLaHunt
Sent: Sunday, February 25, 2018 2:13 PM
To: ua-discuss at icann.org
Subject: Re: [UA-discuss] IANA IDN Tables

Thank you! I had not known about the IANA IDN tables, and they are fascinating reading.

In particular, it provides a concrete way of talking about registry policies that affect phishing attacks through confusables, as discussed in our "Another difficulty to overcome ..." thread a few days ago.

     —Jim DeLaHunt, Vancouver, Canada
On 2018-02-25 03:54, Andre Schappo wrote:

It must be over a year since I last looked at the IANA IDN tables and they have grown massively in that time ➜ iana.org/domains/idn-tables<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fiana.org%2Fdomains%2Fidn-tables&data=04%7C01%7Cmarksv%40microsoft.com%7C8aacd3fef61d49259e1708d57c9cf92a%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C1%7C636551936008511004%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwifQ%3D%3D%7C-1&sdata=kWCkjOTUS4LImnvVu9gBKSEC8zSCL6dEcUFkENc7d18%3D&reserved=0>

Some observations: I will use Verisignʼs Japanese .コム (transliteration of .com)

There is .コム Japanese, which is LDH (ASCII Letters, Digits, Hyphen) + Hiragana + Katakana + a heap of Han
There is .コム Hiragana, which is DH + Hiragana
There is .コム Katakana, which is DH + Katakana
There is .コム Han, which is DH + a heap of Han

André Schappo


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