Suggested Practices for Registration of Internationalized Domain Names (IDN)
J. Klensin · 2005
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 similarlooking 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.