Hebrew

Hebrew

Root Zone Label Generation Rules, 6th Edition Current

Summary

Version6 — Root Zone LGR for the Hebrew Script
Date
Tag und-Hebr (Hebrew)
Unicode16.0.0
ScopeDNS root zone
Source filerz-lgr-6-hebrew-script-23sep25-en.xml (12.2kb)
This ruleset in other editions: 6th Edition 5th Edition 4th Edition 3rd Edition 2nd Edition 1st Edition

This ruleset is integrated into the Common (integrated set) ruleset of this release.

Description

Root Zone Label Generation Rules for the Hebrew Script

Overview

This file contains a set of Label Generation Rules (LGR) for the Hebrew script for the Root Zone. For more details on this LGR and additional background on the script, see “Proposal for a Hebrew Script Root Zone Label Generation Ruleset (LGR)”, Version 1.3 [Proposal-Hebrew]. This file is one of a set of LGR files that together form an integrated LGR for the DNS Root Zone [RZ-LGR-6]. The format of this file follows [RFC 7940].

Repertoire

According to Section 5, “Repertoire” in [Proposal-Hebrew], the Hebrew LGR contains 27 single code points, 5 of which are variants (final forms) of 5 others. The repertoire supports the Hebrew and Yiddish languages with restrictions appropriate for domain names.

The Hebrew script is written from right to left. More details can be found in Section 3, “Background About the Script and Languages Using it” in [Proposal-Hebrew].

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The repertoire is contained in [MSR-6], which is a subset of [Unicode 16.0.0].

As part of the Root Zone, this LGR includes neither decimal digits nor the HYPHEN-MINUS.

Repertoire Listing: Each code point or range is tagged with the script or scripts with which the code point is used. For each repertoire element, one or more references document sufficient justification for inclusion in the repertoire; see the “References” below. Comments provide additional information for some code points.

Code points outside the Hebrew script repertoire that are listed in this file are targets for out-of-repertoire variants and are identified by a reflexive (identity) variant of type “out-of-repertoire-var”. They do not form part of the repertoire.

Variants

According to Section 6, “Variants”, in [Proposal-Hebrew], this LGR defines five in-script variants, which are final forms of five in-script letters.

Additional Variants: This LGR inherits additional blocked cross-script variants by integration; they may not be listed here unless they result in in-script variants. However, for consistency, the variant mappings to ASCII code points are listed in full. See the merged, Common LGR [RZ-LGR-6] for details of all applicable cross-script variants, including any not listed here; always use the Common LGR for determining cross-script collisions of labels.

Variant Disposition: All variants are of type “blocked”, making labels that differ only by these variants mutually exclusive: whichever label containing either of these variants is chosen earlier would be delegated, while any other equivalent labels should be blocked. There is no preference among these labels.

This LGR does not define allocatable variants.

The specification of variants in the Root Zone LGR follows the guidelines in [RFC 8228].

Character Classes

The LGR does not define character classes.

Whole Label Evaluation (WLE) and Context Rules

Default Whole Label Evaluation Rules and Actions

The LGR includes the set of required default WLE rules and actions applicable to the Root Zone and defined in [MSR-6]. They are marked with ⍟. The actions compute a label disposition based on WLE rules or variant mapping types.

Hebrew-specific Rules

According to Section 7, “Whole Label Evaluation (WLE) Rules” in [Proposal-Hebrew], the LGR does not define rules specific to the Hebrew script.

Methodology and Contributors

The Root Zone LGR for the Hebrew Script was developed by the Hebrew Generation Panel. For details on methodology and contributors, see Sections 4 and 8 in [Proposal-Hebrew], as well as [RZ-LGR-6-Overview].

[IL-IDN] was consulted during the work on this LGR.

Changes from RZ LGR-4

As result of integration with additional scripts, this LGR has been updated. This update does not change the set of labels available under this LGR. For the prior version see [RZ-LGR-4-Hebr]. For consistency across RZ-LGRs, imposed variants to ASCII code points, but not to other scripts, are now explicitly listed. Additional cross-script variants for this script exist and are defined in [RZ-LGR-6].

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References

The following general references are cited in this document:

[MSR-6]
Integration Panel, “Maximal Starting Repertoire — MSR-6 Overview and Rationale”, 23 September 2025, https://www.icann.org/en/system/files/files/msr-6-overview-23sep25-en.pdf
[Proposal-Hebrew]
Hebrew Generation Panel, “Proposal for a Hebrew Script Root Zone Label Generation Ruleset (LGR)”, Version 1.3, 24 April 2019, https://www.icann.org/en/system/files/files/proposal-hebrew-lgr-24apr19-en.pdf
[RFC 7940]
Davies, K. and A. Freytag, “Representing Label Generation Rulesets Using XML”, RFC 7940, August 2016, https://www.rfc-editor.org/info/rfc7940
[RFC 8228]
A. Freytag, “Guidance on Designing Label Generation Rulesets (LGRs) Supporting Variant Labels”, RFC 8228, August 2017, https://www.rfc-editor.org/info/rfc8228
[RZ-LGR-6-Overview]
Integration Panel, “Root Zone Label Generation Rules (RZ LGR-6): Overview and Summary”, 23 September 2025, https://www.icann.org/sites/default/files/lgr/rz-lgr-6-overview-23sep25-en.pdf
[RZ-LGR-6]
Integration Panel, “Root Zone Label Generation Rules (RZ-LGR-6)”, 23 September 2025 (XML), https://www.icann.org/sites/default/files/lgr/rz-lgr-6-common-23sep25-en.xml
non-normative HTML presentation: https://www.icann.org/sites/default/files/lgr/rz-lgr-6-common-23sep25-en.html
[RZ-LGR-4-Hebr]
ICANN, Root Zone Label Generation Rules for the Hebrew Script (und-Hebr), Version 4, 5 November 2020 (XML) https://www.icann.org/sites/default/files/lgr/lgr-4-hebrew-script-05nov20-en.xml
non-normative HTML presentation: https://www.icann.org/sites/default/files/lgr/lgr-4-hebrew-script-05nov20-en.html
[Unicode 16.0.0]
The Unicode Consortium. The Unicode Standard, Version 16.0.0, (South San Francisco: The Unicode Consortium, 2024. ISBN 978-1-936213-34-4) https://www.unicode.org/versions/Unicode16.0.0/
[IL-IDN]
Hebrew IDN Table for .IL https://www.iana.org/domains/idn-tables/tables/il_he_1.0.html

For references consulted, particularly in designing the repertoire for the Hebrew script for the Root Zone, please see details in the Table of References below. Reference [0] refers to the Unicode Standard version in which the corresponding code points were initially encoded. Reference [101] corresponds to a source given in [Proposal-Hebrew] justifying the inclusion of the corresponding code points. Entries in the table may have multiple source reference values.

Repertoire

Glyph Code point Tags and context Variants
i U+0069 LATIN SMALL LETTER I 0 Not part of repertoire Tagsc:Latn ו U+05D5 blocked Cross-script near homoglyph
o U+006F LATIN SMALL LETTER O 0 Not part of repertoire Tagsc:Latn ס U+05E1 blocked Cross-script near homoglyph
א U+05D0 HEBREW LETTER ALEF 0 101 Tagsc:Hebr
ב U+05D1 HEBREW LETTER BET 0 101 Tagsc:Hebr
ג U+05D2 HEBREW LETTER GIMEL 0 101 Tagsc:Hebr
ד U+05D3 HEBREW LETTER DALET 0 101 Tagsc:Hebr
ה U+05D4 HEBREW LETTER HE 0 101 Tagsc:Hebr
ו U+05D5 HEBREW LETTER VAV 0 101 Tagsc:Hebr i U+0069 blocked Cross-script near homoglyph
ז U+05D6 HEBREW LETTER ZAYIN 0 101 Tagsc:Hebr
ח U+05D7 HEBREW LETTER HET 0 101 Tagsc:Hebr
ט U+05D8 HEBREW LETTER TET 0 101 Tagsc:Hebr
י U+05D9 HEBREW LETTER YOD 0 101 Tagsc:Hebr
ך U+05DA HEBREW LETTER FINAL KAF 0 101 Final form Tagsc:Hebr כ U+05DB blocked Nominal form variant
כ U+05DB HEBREW LETTER KAF 0 101 Nominal form Tagsc:Hebr ך U+05DA blocked Final form variant
ל U+05DC HEBREW LETTER LAMED 0 101 Tagsc:Hebr
ם U+05DD HEBREW LETTER FINAL MEM 0 101 Final form Tagsc:Hebr מ U+05DE blocked Nominal form variant
מ U+05DE HEBREW LETTER MEM 0 101 Nominal form Tagsc:Hebr ם U+05DD blocked Final form variant
ן U+05DF HEBREW LETTER FINAL NUN 0 101 Final form Tagsc:Hebr נ U+05E0 blocked Nominal form variant
נ U+05E0 HEBREW LETTER NUN 0 101 Nominal form Tagsc:Hebr ן U+05DF blocked Final form variant
ס U+05E1 HEBREW LETTER SAMEKH 0 101 Tagsc:Hebr o U+006F blocked Cross-script near homoglyph
ע U+05E2 HEBREW LETTER AYIN 0 101 Tagsc:Hebr
ף U+05E3 HEBREW LETTER FINAL PE 0 101 Final form Tagsc:Hebr פ U+05E4 blocked Nominal form variant
פ U+05E4 HEBREW LETTER PE 0 101 Nominal form Tagsc:Hebr ף U+05E3 blocked Final form variant
ץ U+05E5 HEBREW LETTER FINAL TSADI 0 101 Final form Tagsc:Hebr צ U+05E6 blocked Nominal form variant
צ U+05E6 HEBREW LETTER TSADI 0 101 Nominal form Tagsc:Hebr ץ U+05E5 blocked Final form variant
ק U+05E7 HEBREW LETTER QOF 0 101 Tagsc:Hebr
ר U+05E8 HEBREW LETTER RESH 0 101 Tagsc:Hebr
ש U+05E9 HEBREW LETTER SHIN 0 101 Tagsc:Hebr
ת U+05EA HEBREW LETTER TAV 0 101 Tagsc:Hebr

Identity mappings, where a code point is declared a variant of itself, are required by RFC 7940 and are omitted here. 16 variant records are declared in total.

Variants

Code points grouped into sets of mutual variants. Every member of a set produces the same set of variant labels, so a registration of one has implications for all the others. Sets of a single member are omitted, as are the identity mappings RFC 7940 requires each member to declare.

7 variant sets, containing 14 variants.

Rules

Conditions evaluated against a whole label, or against the context around a single code point. The notation borrows from regular expressions: ^ and $ anchor to the start and end of a label, . matches any code point, (?= ) and (?<= ) look ahead and behind, and * and + repeat. Two symbols are specific to rulesets: ◆ is the code point being tested, and ⟨name⟩ refers to another rule.

leading-combining-mark MSR default

Default WLE rule matching labels with leading combining marks

^ ({gc:Mn} ∪ {gc:Mc})
Structure
  • ^ start
  • ({gc:Mn} ∪ {gc:Mc}) union
    • {gc:Mn} class
    • {gc:Mc} class
Referenced by 1 definition
  • action 1 (invalid)

Actions

Actions are evaluated in the order shown. The first action whose conditions match determines the disposition of the label.

Actions in precedence order
# Disposition Conditions
1 invalid label matches leading-combining-mark labels with leading combining marks are invalid MSR default
2 invalid any variant is out-of-repertoire-var any variant label with a code point out of repertoire is invalid MSR default
3 blocked any variant is blocked any variant label containing blocked variants is blocked MSR default
4 allocatable all variants are allocatable variant labels with all variants allocatable are allocatable MSR default
5 valid any label default catch all (default action) MSR default

References

RefSource
0 The Unicode Standard, Version 1.1
Any code point originally encoded in Unicode Version 1.1
101 Omniglot, Hebrew (עברית) https://omniglot.com/writing/hebrew.htm