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Proposals for Root Zone Label Generation Ruleset

The Label Generation Ruleset for the Root Zone is the result of integration of Label Generation Rules (LGR) proposals for different scripts or writing systems, which have been developed by relevant Generation Panels and are successfully evaluated by the Integration Panel.

Overview of the Root Zone LGR Proposal Development Process

Root Zone Label Generation Rules (LGR)

The LGR proposals for the Root Zone, which have been submitted for evaluation, are listed in the table below, along with the proposal documents and their current status.

Final Submission Date Script or Writing System Final Submitted Version for Evaluation Current Status
23 September 2021 Latin

Proposal [XML, 117 KB, HTML, 571 KB]
Supporting Document [PDF, 1.8 MB]
Appendices [ZIP, 12 MB]
Test Labels [TXT, 16 KB]

 Published for Public Comment Proceeding
15 July 2021 Greek Proposal [XML, 39 KB]
Supporting Document [PDF, 813 KB]
Test Labels [TXT, 6 KB]		 Published for Public Comment Proceeding
1 May 2021 Korean Proposal [XML, 302 KB]
Supporting Document [PDF, 458 KB]
Appendices [ZIP, 3.19 MB]
Test Labels [TXT, 1 KB]

Pending integration in RZ-LGR
View the second public comment.
View the first public comment.
26 June 2020 Malayalam

Proposal [XML, 27 KB]
Supporting Document [PDF, 1.02 MB]
Test Labels [TXT, 6 KB]

Updated version following second public comment for Integration Panel review.

View the second public comment and GP analysis of comments [PDF, 64 KB].

The first version, integrated into RZ-LGR-3:
Proposal [XML, 29 KB],
Supporting Document [PDF, 1 MB],
Test Labels [TXT, 8 KB].

View the first public comment and GP analysis of comments [PDF, 137 KB]
26 May 2020 Chinese

Proposal [XML, 3.22 MB]
Supporting Document [PDF, 1.95 MB]
Appendices [ZIP, 9.04 MB]
Test Labels [TXT, 9 KB]

Integrated into RZ-LGR-4.
View public comment.
20 May 2020 Bangla

Proposal [XML, 24 KB]
Supporting Document [PDF, 1.8 MB]
Test Labels [TXT, 1 KB]

Integrated into RZ-LGR-4.
View public comment and GP analysis of comments [PDF, 162 KB]
7 June 2019 Telugu Proposal [XML, 7 KB]
Supporting Document [PDF, 1.2 MB]
Test Labels [TXT, 8 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 75 KB]
24 April 2019 Hebrew Proposal [XML, 7 KB]
Supporting Document [PDF, 403 KB]
Test Labels [TXT, 1 KB]		 Integrated into RZ-LGR-3.
View public comment.
22 April 2019 Sinhala Proposal [XML, 19 KB]
Supporting Document [PDF, 855 KB]
Test Labels [TXT, 3 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 172 KB]
22 April 2019 Devanagari Proposal [XML, 48 KB]
Supporting Document [PDF, 1.6 MB]
Test Labels [TXT, 58 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 157 KB]
22 April 2019 Gurmukhi Proposal [XML, 29 KB]
Supporting Document [PDF, 364 KB]
Test Labels [TXT, 6 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 63 KB]
6 March 2019 Tamil Proposal [XML, 14 KB]
Supporting Document [PDF, 2.83 MB]
Test Labels [TXT, 13 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 65 KB]
6 March 2019 Kannada Proposal [XML, 23 KB]
Supporting Document [PDF, 762 KB]
Test Labels [TXT, 6 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 50 KB]
6 March 2019 Oriya Proposal [XML, 17 KB]
Supporting Document [PDF, 1.63 MB]
Test Labels [TXT, 6 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 193 KB]
6 March 2019 Gujarati Proposal [XML, 15 KB]
Supporting Document [PDF, 2.29 MB]
Test Labels [TXT, 8 KB]		 Integrated into RZ-LGR-3.
View public comment and GP analysis of comments [PDF, 34 KB]
3 April 2018 Cyrillic Proposal [XML, 23 KB]
Supporting Document [PDF, 1.2 MB]
Test Labels [TXT, 8 KB]		 Deferred for integration until LGRs for related scripts are submitted.
View public comment.
25 May 2017 Thai Proposal [XML, 15 KB]
Supporting Document [PDF, 1 MB]
Test Labels [TXT, 117 KB]		 Integrated into RZ-LGR-2.
View public comment.
17 May 2017 Ethiopic Proposal [XML, 31 KB]
Supporting Document [PDF, 2.01 MB]
Test Labels [TXT, 2 KB]		 Integrated into RZ-LGR-2.
View public comment.
31 January 2017 Lao Proposal [XML, 16 KB]
Supporting Document [PDF, 2.2 MB]
Test Labels [TXT, 4 KB]		 Integrated into RZ-LGR-2.
View public comment.
24 November 2016 Georgian Proposal [XML, 5 KB]
Supporting Document [PDF, 474 KB]
Test Labels [TXT, 2 KB]		 Integrated into RZ-LGR-2.
View public comment.
15 August 2016 Khmer Proposal [XML, 20 KB]
Supporting Document [PDF, 3.26 MB]
Test Labels [TXT, 9 KB]		 Integrated into RZ-LGR-2.
View public comment.
18 November 2015 Arabic Proposal [XML, 31 KB]
Supporting Document [PDF, 3.47 MB]
Test Labels [TXT, 7 KB]		 Integrated into RZ-LGR-1.
View public comment.
5 November 2015 Armenian Proposal [XML, 9 KB]
Supporting Document [PDF, 1.04 MB]
Test Labels [TXT, 1 KB]		 Deferred for integration until LGRs for related scripts are submitted.
View public comment.

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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."