Nameprep: A Stringprep Profile for Internationalized Domain Names
RFC 3491, “Nameprep: A Stringprep Profile for Internationalized Domain Names”, is a Proposed Standard document published in March 2003 by P. Hoffman, M. Blanchet. It has been obsoleted by RFC 5891 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes how to prepare internationalized domain name (IDN) labels in order to increase the likelihood that name input and name comparison work in ways that make sense for typical users throughout the world. This profile of the stringprep protocol is used as part of a suite of on-the-wire protocols for internationalizing the Domain Name System (DNS). [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 3491 is hosted at rfc-editor.org. Available in TXT,HTML.
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