RFC - 4290

Suggested Practices for Registration of Internationalized Domain Names (IDN)

Original:	ftp://ftp.isi.edu/in-notes/rfc4290.txt
Authors:	J. Klensin []
Date:	December 2005
Category:	Informational

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Referred by:	2 RFC
Refers to:	8 RFC

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Status

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2005).

Abstract

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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