xn--p1ai

Simon Josefsson simon at josefsson.org
Thu Feb 24 00:41:48 CET 2011


All,

I'm using the list of IDN TLDs available from [1] to test my IDNA2008
implementation.  I have noticed that the Russian IDN TLD РФ is rejected
because it starts with U+0420 which is a DISALLOWED code point:

03FD..042F  ; DISALLOWED  # GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..

Possibly there is a typo on the IANA page [1], because [2] says the TLD
name is рф which starts with U+0440.  Visiting some russian web sites,
for example [3], suggests that use of the РФ variant is common.  The РФ
variant works fine in the web browser GNU IceCat (which uses IDNA2003).

Is it correct that IDNA2008 implementations will reject РФ inputs?

Thanks,
/Simon

[1] http://www.iana.org/domains/root/db
[2] http://www.iana.org/reports/2010/rf-report-07apr2010.html
[3] http://кц.рф/en/ aka http://КЦ.РФ/en/ aka http://xn--j1ay.xn--p1ai/en/


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