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Mapping Characters in IDNA

Document Type Replaced Internet-Draft (idnabis WG)
Expired & archived
Authors Pete Resnick , Paul E. Hoffman
Last updated 2015-10-14 (Latest revision 2009-10-19)
Replaced by draft-resman-idna2008-mappings
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status Informational
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Replaced by draft-resman-idna2008-mappings
Action Holders
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD Lisa M. Dusseault
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


In the original version of the Internationalized Domain Names in Applications (IDNA) protocol, any Unicode code points taken from user input were mapped into a set of Unicode code points that "make sense", which were then encoded and passed to the domain name system (DNS). The current version of IDNA presumes that the input to the protocol comes from a set of "permitted" code points, which it then encodes and passes to the DNS, but does not specify what to do with the result of user input. This document describes the actions that can be taken by an implementation between user input and passing permitted code points to the new IDNA protocol.


Pete Resnick
Paul E. Hoffman

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)