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ICG – Fifth Face-to-Face Meeting and Working Session at ICANN 53 Buenos Aires

The IANA Stewardship Transition Coordination Group (ICG) will be holding its next face-to-face meeting on Thursday 18 June and Friday 19 June from 09:00 – 17:00 in Buenos Aires. (Time zone conversions here: Day 1 –, Day 2 –

A precise agenda will become available closer to the meeting date. Topics likely to be covered include:

  • CWG names proposal pre-assessment
  • Planning for combined proposal assessment
  • Response to letter from NTIA regarding proposal finalization and implementation time frames
  • Planning for public comment period on combined proposal
  • Synchronization with CCWG-Accountability work
  • Future meeting/call planning and logistics

15 June 2015 update: An agenda is now available [PDF, 84 KB].

Observers are welcome to attend the session in-person. Information on remote participation and additional language streams will be posted on the following web pages:
Day 1 –
Day 2 –

In addition, the ICG will hold a working session on Thursday 25 June from 09:00 – 13:00 ART (time zone conversions here: This will be a working session to allow ICG members to discuss and wrap up items arising during the ICANN meeting week. More information on the session is available at

For more information about the ICG and the IANA Stewardship Transition, please visit the NTIAIANAFunctions' Stewardship Transition Microsite.

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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"""" is not an IDN."