ICANN Acronyms and Terms
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Internationalized Domain Name table(IDN table)
A specification that defines the permitted characters and rules for combining characters to form labels in the languages and scripts applicable to a particular zone of the Domain Name System (DNS). Zone managers create IDN tables to establish policies for the DNS zones they manage.
The terms Internationalized Domain Name table and Label Generation Rules are synonymous. The term Label Generation Rules is favored when rules are specified in Request for Comments (RFC) 7940 format.