[dns-operations] IDNs

Edward Lewis Ed.Lewis at neustar.biz
Fri Sep 16 20:33:53 UTC 2011

The answer to this question is probably highly local-computer specific.

Looking, for example, at this URL: 

There are five characters I can't see.  The same is true for a few of 
the other IDNs - all seem to be in South Asia for my browser/OS.

I can see the Chinese TLDs (Xianggang, Zhongguo x 2, Taiwan x 2, 
Xinjiapo), Korean and others.  (I'm not surprised about the Chinese 
ones because I've made use of the Chinese character set on my machine 
before.)  What I can see does seem to depend on the application I am 
running (Safari or "vi" or "more" or "cat").

I'm doing this on MacOS machines of various vintages (Leopard, Snow 
L, and Lion).

The question - what's the best way to see all of the TLD names in 
native script?  I mean, if I - echo "$idn" - and idn has a hex 
sequence of UTF-8, what seems to get the most characters "to write 

I don't mean to make this Mac specific, I'm curious if there's an 
optimal solution.
Edward Lewis
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