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ObsoletedPROPOSED STANDARDIETF stream

RFC 3491: Nameprep: A Stringprep Profile for Internationalized Domain Names (IDN)

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 5891.

Current document in this lineage: RFC 5890 — Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework; RFC 5891 — Internationalized Domain Names in Applications (IDNA): Protocol

In plain English — editorial summary, not part of the RFC

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]

Document record

Document ID
RFC3491
Published
March 2003
Authors
P. Hoffman; M. Blanchet
Status
PROPOSED STANDARD
Stream
IETF
Area
app
Pages
7
Also known as
—
Obsoleted by:
RFC 5891

Topics

Standards lineage

This document is one revision in a chain of 4 RFCs, each formally replacing the one before it.

  1. RFC 3490 (2003)
  2. RFC 3491 (2003)
  3. RFC 5890 (2010)
  4. RFC 5891 (2010) ✓

Read the full history of Internationalized Domain Names in Applications (IDNA): Protocol →

Referenced by

One later RFC formally updates or obsoletes part of this document.

Related documents

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/3491-nameprep-a-stringprep-profile-for-internationalized-domain-names-idn