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Customer Standing Committee (CSC)

About the Customer Standing Committee (CSC)

The CSC ensures the satisfactory performance of the Internet Assigned Numbers Authority (IANA) naming function.

The CSC is responsible for monitoring Public Technical Identifier’s (PTI) performance of the IANA naming function against the service level expectations in the IANA Naming Function Contract.

The CSC analyzes performance reports provided by PTI and publishes its findings.

The CSC is authorized to undertake remedial action to address poor performance of the IANA naming function, and if performance issues are not remedied, may escalate the issues to the ccNSO and GNSO.

Follow the CSC discussions at The CSC can be contacted at

If you'd like to be informed of upcoming meetings, receive CSC reports, etc., you may subscribe at

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Latest Updates

Upcoming Meetings

  • 14 Dec 2017
    20:00 UTC

    CSC Meeting 18

  • 15 Jan 2018
    20:00 UTC

    CSC Meeting 19

  • 15 Feb 2018
    20:00 UTC

    CSC Meeting 20

  • 10 Mar 2018
    20:00 UTC

    ICANN61 Puerto Rico

  • 16 Apr 2018
    20:00 UTC

    CSC Meeting 21

  • 15 May 2018
    20:00 UTC

    CSC Meeting 22

  • 15 Jun 2018
    20:00 UTC

    CSC Meeting 23

  • 25 Jun 2018
    08:00 UTC

    ICANN62 Panama City

  • 16 Jul 2018
    20:00 UTC

    CSC Meeting 24

  • 15 Aug 2018
    20:00 UTC

    CSC Meeting 25

  • 17 Sep 2018
    20:00 UTC

    CSC Meeting 26

  • 15 Oct 2018
    20:00 UTC

    CSC Meeting 27

  • 20 Oct 2018
    08:00 UTC

    ICANN63 Barcelona

  • 15 Nov 2018
    20:00 UTC

    CSC Meeting 28

  • 17 Dec 2018
    20:00 UTC

    CSC Meeting 29

Past Meetings

Reports & Findings

Related Links

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."