API Build-data JSON Resources
Theme

Choose how MSRBot.io looks on this device.

Auto (match system) Light mode Dark mode

Preference is stored in this browser only.

IETF RFC 3490
[SUPERSEDED]

Internationalizing Domain Names in Applications (IDNA)

Metadata

Publisher
IETF
Doc Type
Standard
Pages
22
Abstract
Until now, there has been no standard method for domain names to use characters outside the ASCII repertoire. This document defines internationalized domain names (IDNs) and a mechanism called Internationalizing Domain Names in Applications (IDNA) for handling them in a standard fashion. IDNs use characters drawn from a large repertoire (Unicode), but IDNA allows the non-ASCII characters to be represented using only the ASCII characters already allowed in so-called host names today. This backward-compatible representation is required in existing protocols like DNS, so that IDNs can be introduced with no changes to the existing infrastructure. IDNA is only meant for processing domain names, not free text. [STANDARDS-TRACK]
Publication Date
2003-03-01
Status Note
Proposed Standard
DOI
10.17487/RFC3490
Link
https://doi.org/10.17487/RFC3490
Author(s)
Patrik Fältström
Paul E. Hoffman
A. Costello
Keyword(s)
IDN, ASCII, Characters
Latest version of IETF RFC 3490

Document Versions — IETF RFC 3490

  • ▶ IETF RFC 3490 (2003-03-01)
    THIS DOC [SUPERSEDED] [LATEST VERSION]

Superseded by:

Normative Reference(s)

Bibliographic Reference(s)

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/RFC3490.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree
Reference this Doc

Plain text (ISO 690 compliant)

Preview:
IETF RFC 3490, Internationalizing Domain Names in Applications (IDNA). Available at https://doi.org/10.17487/RFC3490
Snippet:
IETF RFC 3490, Internationalizing Domain Names in Applications (IDNA). Available at https://doi.org/10.17487/RFC3490

HTML (ISO 690 compliant)

Preview:
IETF RFC 3490, Internationalizing Domain Names in Applications (IDNA). Available at https://doi.org/10.17487/RFC3490
Snippet:
<span class="citation"><cite>IETF RFC 3490</cite>, Internationalizing Domain Names in Applications (IDNA). Available at <a href="https://doi.org/10.17487/RFC3490" target="_blank" rel="noopener">https://doi.org/10.17487/RFC3490</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
IETF RFC 3490, Internationalizing Domain Names in Applications (IDNA)
doi: 10.17487/RFC3490
url: https://doi.org/10.17487/RFC3490
Snippet:
<li>
<cite id="bib-rfc3490">IETF RFC 3490</cite>, Internationalizing Domain Names in Applications (IDNA)
<span class="doi">10.17487/RFC3490</span>
</li>

Referenced By