RFC 4290 on Suggested Practices for Registration of Internationalized Domain Names (IDN)

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        RFC 4290

        Title:      Suggested Practices for Registration of
                    Internationalized Domain Names (IDN)
        Author(s):  J. Klensin
        Status:     Informational
        Date:       December 2005
        Mailbox:    john-ietf@jck.com
        Pages:      28
        Characters: 71115
        Updates/Obsoletes/SeeAlso:    None

        I-D Tag:    draft-klensin-reg-guidelines-08.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc4290.txt

This document explores the issues in the registration of
internationalized domain names (IDNs).  The basic IDN definition
allows a very large number of possible characters in domain names, and
this richness may lead to serious user confusion about similar-looking
names.  To avoid this confusion, the IDN registration process must
impose rules that disallow some otherwise-valid name combinations.
This document suggests a set of mechanisms that registries might use
to define and implement such rules for a broad range of languages, 
including adaptation of methods developed for Chinese, Japanese, and
Korean domain names.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

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