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Public Comment: CAC Proposed Amendments to the UDRP Supplemental Rules of the Czech Arbitration Court

The Czech Arbitration Court (CAC), an Approved Provider for the Uniform Domain Name Dispute Resolution Policy (UDRP) is proposing to amend its Supplemental Rules to provide for an alternative page limit and processing fee for certain UDRP Complaints. CAC is not proposing any changes to the text of the UDRP ( or the UDRP Implementation Rules (

The CAC provides a cover letter explaining their proposal as well as a redline of the proposed changes to the Supplemental Rules (available at

CAC’s proposal is being posted for public comment for 30 days to ensure broad community input. Comments regarding CAC’s proposal maybe submitted by email to: through 11 December 2009.

Comments may be viewed at:

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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."