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Announcements

Application Deadline Extended for ICANN and PTI Leadership Positions

LOS ANGELES – 19 February 2019 – The Internet Corporation for Assigned Names and Numbers (ICANN) Nominating Committee (NomCom) has extended its application deadline for ICANN and PTI leadership positions. The new deadline is Friday, 22 March 2019...

Alert Regarding Published Reports of Attacks on the Domain Name System

LOS ANGELES – 15 February 2019 – The Internet Corporation for Assigned Names and Numbers (ICANN) today announced that it is aware of several recent public reports regarding malicious activity targeting the Domain Name System (DNS). We have no...

ICANN64 Prep Week

ICANN org is piloting a new initiative called Prep Week to consolidate all pre-ICANN Public Meeting webinars into one week. Starting with ICANN64, Prep Week will streamline the pre-meeting experience, so deeper conversations can be had in the...

Call for Expressions of Interest for Independent Financial Expert to ICANN Board Audit Committee

LOS ANGELES – 12 February 2019 – The Internet Corporation for Assigned Names and Numbers (ICANN) is seeking expressions of interest to serve as an external independent Financial Expert to the ICANN Board Audit Committee. Background ICANN's Board...

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SSAC Chair Rod Rasmussen on IDN Homographic Attacks

In an interview with ICANN’s Andrew McConachie, Security and Stability Advisory Committee (SSAC) Chair Rod Rasmussen discusses the use of Internationalized Domain Name (IDN) homographic attacks....

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Interview with the NomCom

ICANN’s James Cole sits down with members of the 2019 Nominating Committee (NomCom) - Damon Ashcroft, Zahid Jamil, and Cheryl Miller - to talk about the role of the NomCom, the Board positions that...

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EPDP Update

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Blog Posts

Second Security, Stability, and Resiliency (SSR2) Review Team Update

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North America Stakeholder Engagement is On Track for Growth

ICANN64 Prep Week

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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."