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RFC 3490 on Internationalizing Domain Names in Applications (IDNA)

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        RFC 3490

        Title:      Internationalizing Domain Names in Applications
        Author(s):  P. Faltstrom, P. Hoffman, A. Costello
        Status:     Standards Track
        Date:       March 2003
        Mailbox:    paf@cisco.com, phoffman@imc.org,
        Pages:      22
        Characters: 51943
        Updates/Obsoletes/SeeAlso:  None

        I-D Tag:    draft-ietf-idn-idna-14.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3490.txt

Until now, there has been no standard method for domain names to use
characters outside the ASCII repertoire.  This document defines
internationalized domain names (IDNs) and a mechanism called
Internationalizing Domain Names in Applications (IDNA) for
handling them in a standard fashion.  IDNs use characters drawn from a
large repertoire (Unicode), but IDNA allows the non-ASCII characters
to be represented using only the ASCII characters already allowed in
so-called host names today.  This backward-compatible representation
is required in existing protocols like DNS, so that IDNs can be
introduced with no changes to the existing infrastructure.  IDNA is
only meant for processing domain names, not free text.

This document is a product of the Internationalized Domain Name
Working Group of the IETF.

This is now a Proposed Standard Protocol.

This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol.  Distribution
of this memo is unlimited.

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


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