Skip to main content

Announcements

Version préliminaire des plans opérationnels et des budgets de la PTI et de l’IANA pour l’exercice fiscal 2021

Date d'ouverture : 14 octobre 2019 Date de clôture : 27 novembre 2019 Organisation à l'origine de la consultation : Finances Catégories/Étiquettes : Opérations /...

Changements et ajouts proposés aux conventions de service de l'IANA pour la création et le transfert de ccTLD

Date d'ouverture : 14 octobre 2019 Date de clôture : 25 novembre 2019 Organisation à l'origine de la consultation : ICANN Catégories/Étiquettes : Contrat des fonctions IANA relatives au nommage, contrat...

Rapport final de l’équipe de révision du service d’annuaire des données d’enregistrement (RDS-WHOIS2)

Date d'ouverture : 8 octobre 2019 Date de clôture : 25 novembre 2019 Organisation à l'origine de la consultation : Organisation ICANN - Stratégie multipartite et initiatives stratégiques...

Recommandations pour l'utilisation technique des règles publiées de génération d'étiquettes pour la zone racine

Los Angeles, le 7 octobre 2019. La Société pour l'attribution des noms de domaine et des numéros sur Internet (lCANN) a annoncé la publication d'une série de Recommandations pour l'utilisation technique des règles de génération d'étiquettes pour...

BROWSE ALL ANNOUNCEMENTS

Multimedia

0

ICANN’s Multistakeholder Advice Development Process | English

A new animated video illustrates ICANN’s multistakeholder advice development. The video identifies the key steps within each of the four Advisory Committees and provides a high-level explanation of...

0

Celebrating Five Years of NextGen@ICANN!

Meet 6 of the impressive young people from around the world who took part in NextGen@ICANN program as we celebrate the fifth anniversary of the program.

Artworks 000557965560 vyy6vo t500x500

Celebrating Five Years Of NextGen@ICANN!

Meet 6 of the impressive young people from around the world who took part in NextGen@ICANN program as we celebrate the fifth anniversary of the program.

Artworks 000557855151 k42hye t500x500

Janis Karklins Talks EPDP Team Phase 2

Janis Karklins, Chair of EPDP Team Phase 2, discusses priorities for Phase 2 of the Expedited Policy Development Process on the Temporary Specification for gTLD Registration Data.

BROWSE ALL MULTIMEDIA

Blog Posts

Mise à jour de sécurité de Zoom

Hero1 tarek 974 x 606 fr

Un billet sur l’amitié

BROWSE ALL BLOG POSTS

Sign Up to Get News Updates

Tell us which topics you care about and we'll send updates to your homepage and email.

Already have an Account? Sign In

Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as""icann.org"" is not an IDN."