Linguistic Guidelines for the Use of the Arabic Language in Internet Domains
RFC 5564
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Type |
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RFC - Informational
(February 2010; No errata)
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Last updated |
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2015-10-14
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Stream |
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ISE
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Formats |
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plain text
pdf
html
bibtex
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ISE state
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(None)
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Consensus Boilerplate |
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Unknown
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Document shepherd |
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No shepherd assigned
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| IESG |
IESG state |
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RFC 5564 (Informational)
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Telechat date |
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Responsible AD |
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Lisa Dusseault
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Send notices to |
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rfc-editor@rfc-editor.org
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Independent Submission A. El-Sherbiny
Request for Comments: 5564 M. Farah
Category: Informational UN-ESCWA
ISSN: 2070-1721 I. Oueichek
Syrian Telecom Establishment
A. Al-Zoman
SaudiNIC, CITC
February 2010
Linguistic Guidelines for the Use of
the Arabic Language in Internet Domains
Abstract
This document constitutes technical specifications for the use of
Arabic in Internet domain names and provides linguistic guidelines
for Arabic domain names. It addresses Arabic-specific linguistic
issues pertaining to the use of Arabic language in domain names.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This is a contribution to the RFC Series, independently of any other
RFC stream. The RFC Editor has chosen to publish this document at
its discretion and makes no statement about its value for
implementation or deployment. Documents approved for publication by
the RFC Editor are not a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5564.
El-Sherbiny, et al. Informational [Page 1]
RFC 5564 Arabic Character Guidelines February 2010
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document.
This document may not be modified, and derivative works of it may not
be created, except to format it for publication as an RFC or to
translate it into languages other than English.
Table of Contents
1. Introduction ....................................................2
2. Arabic Language-Specific Issues .................................3
2.1. Linguistic Issues ..........................................4
2.1.1. Diacritics (Tashkeel) and Shadda ....................4
2.1.2. Kasheeda or Tatweel (Horizontal Character
Size Extension) .....................................5
2.1.3. Character Folding ...................................5
2.2. Supported Character Set ....................................6
2.3. Arabic Linguistic Issues Affected by Technical
Constraints ................................................8
2.3.1. Numerals ............................................8
2.3.2. The Space Character .................................8
3. Summary and Conclusion ..........................................8
4. Security Considerations .........................................9
5. Acknowledgments .................................................9
6. References ......................................................9
6.1. Normative References .......................................9
6.2. Informative References .....................................9
1. Introduction
The Internet Engineering Task Force (IETF) issued in March 2003 a set
of RFCs for Internationalized Domain Names (IDN) ([1], [2], and [3]),
which were planned to become the de facto standard for all languages.
In 2007 and 2008, the following working drafts were released that
propose revisions to the IDNA protocol:
o Internationalized Domain Names for Applications (IDNA):
Background, Explanation, and Rationale [5]
El-Sherbiny, et al. Informational [Page 2]
RFC 5564 Arabic Character Guidelines February 2010
o Internationalized Domain Names in Applications (IDNA): Protocol
[6]
o An updated IDNA criterion for right-to-left scripts [7]
o The Unicode code points and IDNA [8]
These documents are known collectively as "IDNA2008".
This document constitutes a technical specification for the
implementation of the IDN standards in the case of the Arabic
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