RFC 9233

Internationalized Domain Names for Applications 2008 (IDNA2008) and Unicode 12.0.0

📅 published March 2022, from ietf

RFC 9233: Internationalized Domain Names for Applications 2008 (IDNA2008) and Unicode 12.0.0 🎀

Okay bestie, this one is by P. Fältström from Netnod ✨ It's a Standards Track document, which means it's an actual Internet standard and not just a vibe. It was published in March 2022 (ISSN 2070-1721). The header doesn't list anything it obsoletes or updates, so there's no drama there 💅

Abstract

This document covers the changes between Unicode 6.0.0 and Unicode 12.0.0 in the context of the current version of Internationalized Domain Names for Applications 2008 (IDNA2008) 🌈 Some additions and changes made in the Unicode Standard affect the values that the IDNA2008 algorithm produces. IDNA2008 lets you add exceptions to the algorithm for backward compatibility, but this document doesn't add any 🙅‍♀️ It also gives IANA the tables it needs to keep its database consistent with Unicode 12.0.0. And to give you some context, it describes systems that are used as alternatives to the ones that conform to IDNA2008 🦋

Status of This Memo

This is an Internet Standards Track document ✨

It's a product of the Internet Engineering Task Force (IETF) and represents the consensus of the IETF community. It went through public review and got approved for publication by the Internet Engineering Steering Group (IESG). If you want more on Internet Standards, check out Section 2 of RFC 7841 📚

For the current status, any errata, and how to give feedback, go to https://www.rfc-editor.org/info/rfc9233 💜

Copyright (c) 2022 IETF Trust and the persons identified as the document authors. All rights reserved 🔒

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) as they stand on the publication date. Please read these carefully, because they spell out your rights and restrictions for this document 🧐 Code components taken from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions, and they come without warranty, as described in the Revised BSD License.

Table of Contents 📋

   1.  Introduction
   2.  Background
     2.1.  IDNA2008 Documents
     2.2.  Additional Important IDNA2008-Related Documents
     2.3.  Deployment
   3.  Notable Changes between Unicode 6.0.0 and 12.0.0
     3.1.  Changes between Unicode 6.0.0 and 7.0.0
     3.2.  Changes between Unicode 7.0.0 and 10.0.0
     3.3.  Changes between Unicode 10.0.0 and 11.0.0
     3.4.  Changes between Unicode 11.0.0 and 12.0.0
   4.  U+111C9 SHARADA SANDHI MARK
   5.  Conclusion
   6.  IANA Considerations
   7.  Security Considerations
   8.  References
     8.1.  Normative References
     8.2.  Informative References
   Appendix A.  Changes from Unicode 6.0.0 to Unicode 7.0.0
   Appendix B.  Changes from Unicode 7.0.0 to Unicode 8.0.0
   Appendix C.  Changes from Unicode 8.0.0 to Unicode 9.0.0
   Appendix D.  Changes from Unicode 9.0.0 to Unicode 10.0.0
   Appendix E.  Changes from Unicode 10.0.0 to Unicode 11.0.0
   Appendix F.  Changes from Unicode 11.0.0 to Unicode 12.0.0
   Acknowledgments
   Author's Address

1. Introduction ✨

Okay so, the current version of Internationalized Domain Names for Applications (IDNA) was started in 2008. It wasn't finished until 2010, but everyone calls it "IDNA2008" 💅 It's specified in the set of documents listed in Section 2.1. The IDNA2008 standard has an algorithm that calculates a derived property value from the properties defined in the Unicode Standard 🧮

The derived property values that can be calculated are defined in RFC 5892 [RFC5892]. Here's a quick summary to help you read this document. For the actual definitions, go to RFC 5892 [RFC5892] 📖

  • PROTOCOL VALID: These are the code points that are allowed in IDNs. Code points with this value are permitted for general use in IDNs. Just because a label is made only of code points with this value doesn't mean the label works in DNS though 🙈 The short form PVALID is used for this value.
  • CONTEXTUAL RULE REQUIRED: Some characters are invisible in certain contexts or troublemakers in others, so they can't be used in labels unless specific other characters or properties are also present. The short form CONTEXT is used for this value. As RFC 5892 [RFC5892] explains, CONTEXT is further divided into CONTEXTJ and CONTEXTO.
  • DISALLOWED: These should clearly not be in IDNs. Code points with this value are not permitted in IDNs 🚫
  • UNASSIGNED: These are the code points that aren't designated (meaning unassigned) in the Unicode Standard 🫥

When the Unicode Standard gets updated, new code points get assigned, and code points that already had assignments can have their property values changed 🔄 This is where things get spicy:

  • Assigning code points can cause problems if the new code points are compositions of existing code points, and the normalization relationships for those code points should have changed because of it.
  • Changing properties on code points that are already assigned can cause problems if the change alters the derived property value. A code point that used to be allowed, with a derived property value of PVALID, could get prohibited if its value changes to DISALLOWED. It can also go the other way around: a code point that wasn't allowed (and was therefore prohibited) can suddenly become allowed 😳
  • Problems can also come up if the properties given to those code points don't match the IDNA2008 assumptions about how properties are assigned, or about how code points with those properties get used or behave.

There were three incompatible changes in the Unicode Standard between Unicode 5.2.0 [Unicode-5.2.0] and Unicode 6.0.0 [Unicode-6.0.0]. They're described in RFC 6452 [RFC6452]. The code points U+0CF1 and U+0CF2 changed their derived property value from DISALLOWED to PVALID, and the code point U+19DA changed from PVALID to DISALLOWED. People examined these changes in great detail, but the IETF concluded that they didn't call for an update to RFC 5892 [RFC5892] 🔍

As Section 3 describes, there have been more incompatible changes to code points between Unicode 6.0.0 and Unicode 12.0.0 [Unicode-12.0.0]. Still, the changes in derived property values don't cause any exceptions (as defined in Section 2.6 of RFC 5892 [RFC5892]) that would require an update to the "IDNA Contextual Rules" registry. An update to that registry would also count as an update to RFC 5892 [RFC5892], so this is a big deal 🙌

Next, in 2015, the Internet Architecture Board (IAB) put out a statement [IAB2005-1]. It advised the community to avoid using any of the potentially problematic code points, and it asked the IETF to resolve the issues around the code point ARABIC LETTER BEH WITH HAMZA ABOVE (U+08A1), which came in with Unicode 7.0.0 [Unicode-7.0.0]. That February, the statement was revised [IAB2005-2] to focus on that second request. There's more detail on the problem of code point sequences not normalizing the way you'd expect in a draft that was part of the discussion [IDNA7] 🧵

The IETF's work ended with no exception added to RFC 5892 [RFC5892]. Still, the review of the U+08A1 issues showed that this code point isn't a one-off, and that a number of long-standing PVALID code points might have similar problems 👀 Those affected code points stay PVALID in this document. Spotting the problem did lead to a clarification of the review process for new Unicode versions. That clarification, which reinforces the original review plan for catching issues like these, was published as RFC 8753 [RFC8753]. Any review of Unicode versions after 12.0.0 should follow RFC 8753 [RFC8753], and one goal of this document is to make sure those later versions can get a proper review 💖

2. Background 🌸

2.1. IDNA2008 Documents

IDNA2008 is made up of the following documents. The documents in the set have informal names 🏷️

  • "Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework" [RFC5890], informally called "Defs" or "Definitions". It holds definitions and other material you need to understand the other documents in the set 📘
  • "Internationalized Domain Names in Applications (IDNA): Protocol" [RFC5891], informally called "Protocol". It describes the core IDNA2008 protocol and how it operates. You have to read it together with the Bidi document (described below). RFC 5891 [RFC5891] obsoletes RFC 3491 [RFC3491] and, in particular, the use of the tables that RFC 3491 [RFC3491] refers to 🔁
  • "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA)" [RFC5892], informally called "Tables". It lists the categories and rules that identify which code points are allowed in a label written in native character form (called a "U-label"). It's based on the Unicode 5.2.0 [Unicode-5.2.0] code point assignments plus extra rules that are unique to IDNA2008. The Unicode-based rules in RFC 5892 are expected to stay stable across Unicode updates, which is why they don't depend on Unicode versions 🧱
  • "Right-to-Left Scripts for Internationalized Domain Names for Applications (IDNA)" [RFC5893], informally called "Bidi". It sets out special rules for labels that contain characters written from right to left ➡️⬅️
  • "Internationalized Domain Names for Applications (IDNA): Background, Explanation, and Rationale" [RFC5894], informally called "Rationale". It gives an overview of the protocol and its associated tables, plus explanations and the reasoning behind the decisions that led to IDNA2008. It also has advice for DNS registry operators and others who use Internationalized Domain Names (IDNs) 🧠
  • "Mapping Characters for Internationalized Domain Names in Applications (IDNA) 2008" [RFC5895], informally called "Mapping". It covers mapping characters into other characters and gives guidance on doing that when it's appropriate. RFC 5895 provides advice only and is not a required part of IDNA 🗺️

There are other documents that matter for understanding and running IDNA2008, for example this one 🎀

  • "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) - Unicode 6.0" [RFC6452] describes some changes made in Unicode 6.0.0 [Unicode-6.0.0] that caused derived property value changes for the code points U+0CF1, U+0CF2, and U+19DA. U+0CF1 and U+0CF2 changed from DISALLOWED to PVALID, while U+19DA changed from PVALID to DISALLOWED. The IETF concluded that no update to RFC 5892 [RFC5892] was needed based on the changes made in Unicode 6.0.0 [Unicode-6.0.0]. Because of that, the derived property value stayed aligned with the Unicode Standard, and no exception was added 🦋

2.3. Deployment

There are many variations on the general IDNA model in use in the various parts of the community. The following lists some of the strategies that implementations that claim to be IDNA compliant are known to use, but it should be noted the list is not complete:

  • IDNA2003 as specified in RFC 3490 [RFC3490] and RFC 3491 [RFC3491]. Those specifications are dependent on case folding, Normalization Form KC (NFKC), and on tables that specify for each code point whether it is allowed to be used or not, with a distinction made between use for "stored strings" and "query strings". The tables themselves are dependent on Unicode 3.2 [Unicode-3.2.0].
  • A number of variations on IDNA2003, sometimes presented as "updated IDNA2003" or the like, which follow the principles of IDNA2003 as understood by the implementers but that use tables that represent how the implementers believe Stringprep [RFC3454] and Nameprep [RFC3491] would have evolved had the IETF not moved in the direction of IDNA2008 instead.
  • A mix between IDNA2003 and IDNA2008 where code points assigned to Unicode after Unicode 3.2.0 [Unicode-3.2.0] have derived property value calculated according to the algorithm specified in IDNA2008.
  • A mix between IDNA2003 and IDNA2008 according to the Unicode Technical Standard #46 [UTS-46]. Because that document specifies different profiles, there are several variations that leave users with no guarantee that two applications claiming conformance to UTS#46 will interoperate well with each other much less with conforming IDNA2008 implementations. UTS#46 is ultimately based on a normative table very much like the one used by Stringprep [RFC3454] but updated for each new version of Unicode.
  • The (normative) IDNA2008 algorithm applied to whatever version of Unicode Standard exists in the operating system and/or libraries used, independent of whatever version of tables appears in the (non-normative) IANA database.

In practice, the Unicode Consortium creates a maximum set of code points by assigning code points in the Unicode Standard. The IDNA2008 rules use the Unicode Standard to create a further subset of code points and context that are permitted in DNS labels associated with its PVALID and CONTEXT (CONTEXTJ or CONTEXTO) derived property values. DNS registries and other organizations that deal with IDNs are supposed to create their own subsets from IDNA2008 for use by those registries and organizations.

This progressive subsetting and narrowing of the repertoire of code points that can be used in labels is an implementation of the principles of being conservative when deciding what code points to include in such a subset. SAC-084 [SAC-084] and RFC 6912 [RFC6912] recommend to DNS registries and other organizations to be conservative when creating their subsets and to use the principle of creating subsets by inclusion.

See also Security Considerations (Section 7) in this document.

  1. Notable Changes between Unicode 6.0.0 and 12.0.0

Among the changes between the Unicode versions, most code points that change derived property value change from UNASSIGNED to PVALID or from UNASSIGNED to DISALLOWED. The interesting changes in derived property values include other changes. All changes between the major versions of Unicode can be found in Appendix A (6.0.0-7.0.0), Appendix B (7.0.0-8.0.0), Appendix C (8.0.0-9.0.0), Appendix D (9.0.0-10.0.0), Appendix E (10.0.0-11.0.0), and Appendix F (11.0.0-12.0.0).

3.1. Changes between Unicode 6.0.0 and 7.0.0

Change in number of characters in each category:

  • PVALID changed from 97418 to 99867 (+2449)
  • UNASSIGNED changed from 865081 to 861509 (-3572)
  • CONTEXTJ did not change, at 2
  • CONTEXTO did not change, at 25
  • DISALLOWED changed from 151586 to 152709 (+1123)
  • TOTAL did not change, at 1114112

There are no changes made to Unicode between version 6.0.0 and 7.0.0 that impact IDNA2008 calculation of the derived property values.

The code points U+17B4 KHMER VOWEL INHERENT AQ and U+17B5 KHMER VOWEL INHERENT AA both changed the General Category from Cf (Format) to Mn (Nonspacing_Mark), but that did not impact the calculation of the derived property value which stayed at DISALLOWED.

The character ARABIC LETTER BEH WITH HAMZA ABOVE (U+08A1) was introduced in Unicode 7.0.0. This was discussed extensively in the IETF and also by the IAB in their statement [IAB2005-1] requesting the IETF to investigate the issue. Specifically, the IAB stated:

On the same precautionary principle, the IAB recommends that the
Internationalized Domain Names for Applications (IDNA) Parameters
registry <https://www.iana.org/assignments/idna-tables/> not be
updated to Unicode 7.0.0 until the IETF has consensus on a
solution to this problem.

The discussion in the IETF concluded that although it is possible to create "the same" character in multiple ways, the issue with U+08A1 is not unique. The character U+08A1 (ARABIC LETTER BEH WITH HAMZA ABOVE) can be represented with the sequence ARABIC LETTER BEH (U+0628) and ARABIC HAMZA ABOVE (U+0654). This is identical to LATIN SMALL LETTER O WITH STROKE (U+00F8), which can be represented with the sequence LATIN SMALL LETTER O (U+006F) followed by COMBINING SHORT SOLIDUS OVERLAY (U+0337).

Although the discussion about this specific code point resulted in acceptance of the derived property value of PVALID, the underlying problem with combining sequences is not understood fully. Therefore, it cannot be claimed that this case can be extrapolated to other situations and other code points.

3.2. Changes between Unicode 7.0.0 and 10.0.0

Change in number of characters in each category:

  • Code points that changed derived property value: 0
  • PVALID changed from 99867 to 122411 (+22544)
  • UNASSIGNED changed from 861509 to 837775 (-23734)
  • CONTEXTJ did not change, at 2
  • CONTEXTO did not change, at 25
  • DISALLOWED changed from 152709 to 153899 (+1190)
  • TOTAL did not change, at 1114112

There are no changes made to Unicode between version 7.0.0 and 10.0.0 that impact IDNA2008 calculation of the derived property values.

3.3. Changes between Unicode 10.0.0 and 11.0.0

Change in number of characters in each category:

  • Code points that changed derived property value: 1
  • PVALID changed from 122411 to 122734 (+323)
  • UNASSIGNED changed from 837775 to 837091 (-684)
  • CONTEXTJ did not change, at 2
  • CONTEXTO did not change, at 25
  • DISALLOWED changed from 153899 to 154260 (+361)
  • TOTAL did not change, at 1114112
  • Georgian letters in the ranges U+10D0..U+10FA and U+10FD..U+10FF had their General Category changed from Lo (Other_Letter) to Ll (Lowercase_Letter) to reflect their status as the lowercase of new Georgian case pairs. Case mappings were also added.
  • SHARADA SANDHI MARK (U+111C9) General Category was changed from Po (Other_Punctuation) to Mn (Nonspacing_Mark), and the Bidi property was changed from L (Left to Right) to NSM (Nonspacing Mark).
  • The properties for ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and ZANABAZAR SQUARE VOWEL SIGN AU (U+11A08) were corrected from Mc to Mn.
  • SPHERICAL ANGLE OPENING UP (U+29A1) was changed to Bidi Mirrored to No.

These changes to the Unicode Standard have the following implications for these code points:

  • The newly assigned 684 characters are assigned a derived property value as of a result of applying the IDNA2008 algorithm.
  • The Georgian letters in the ranges U+10D0..U+10FA and U+10FD..U+10FF existed before IDNA2008 was created. Applying the IDNA2008 algorithm to the code points assigned the derived property value PVALID, and that value is unchanged even if the underlying Unicode properties have changed. The newly encoded Mtavruli letters have General Category Lu (Uppercase_Letter) and are therefore DISALLOWED.
  • The U+111C9 SHARADA SANDHI MARK was added to Unicode 8.0.0 [Unicode-8.0.0]. Applying the IDNA2008 algorithm to the code point assigned the derived property value DISALLOWED. The changes in the underlying properties in Unicode 11.0.0 [Unicode-11.0.0] caused the derived property value to change to PVALID.
  • The characters ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and ZANABAZAR SQUARE VOWEL SIGN AU (U+11A08) were added to Unicode 10.0.0 [Unicode-10.0.0]. Applying the IDNA2008 algorithm to the code points assigned the derived property value PVALID, and that value is unchanged even if the underlying Unicode properties have changed.
  • SPHERICAL ANGLE OPENING UP (U+29A1) existed before IDNA2008 was created. Applying the IDNA2008 algorithm to the code point assigned the derived property value DISALLOWED, and that value is unchanged even if the underlying Unicode properties have changed.

3.4. Changes between Unicode 11.0.0 and 12.0.0

Change in number of characters in each category:

  • Code points that changed derived property value: 0
  • PVALID changed from 122734 to 123006 (+272)
  • UNASSIGNED changed from 837091 to 836537 (-554)
  • CONTEXTJ did not change, at 2
  • CONTEXTO did not change, at 25
  • DISALLOWED changed from 154260 to 154542 (+282)
  • TOTAL did not change, at 1114112
  1. U+111C9 SHARADA SANDHI MARK

As one can see in Section 3, an incompatible property change was made between Unicode 6.0.0 and 12.0.0, affecting the code point U+111C9. Its derived property value thus changed from DISALLOWED to PVALID. In situations like these, IDNA2008 allows for addition of rules to RFC 5892 [RFC5892], Section 2.7. If the code point is accepted, it might still be rejected if validated by software based on versions of Unicode older than 12.0.0. As the character is rarely used outside the group of Sharada specialists but is used in some records for indicating sandhi breaks, the conclusion was that it could either be added as an exception or allowed to change its property value. As including an exception would require implementation changes to deployments of IDNA20008, the IETF has decided not to add a BackwardCompatible rule to IDNA2008 (i.e., Section 2.7 of RFC 5892 [RFC5892]) for this code point. This also ensures all sandhi marks are treated equally.

  1. Conclusion

As described in Sections 3 and 4, changes have been made to Unicode between version 6.0.0 and 12.0.0. Some changes to specific characters changed their derived property value, whereas other changes did not. Given the deployment considerations described in Section 2.3 and changes in the Unicode Standard described in Sections 3 and 4, including implications to normalization, the conclusion is not to add any exception rules to IDNA2008.

This document addresses only changes to Unicode between version 6.0.0 and version 12.0.0. Changes in future Unicode versions might result in the conclusion that exception rules need to be added to IDNA2008 after the review process explained in RFC 8753 [RFC8753]. Separately from any changes in Unicode, the IETF might conclude that updates to RFC 5892 [RFC5892] or other IDNA2008 documents might become necessary; such updates might include changes to the algorithm specified in IDNA2008 as well as additional rules, categories, or other forms of tuning, like the clarifications in RFC 8753 [RFC8753].

6. IANA Considerations ✨

Okay so IANA keeps the big official lists 📋, and this section is short but iconic 💅. IANA updated the "IDNA Rules and Derived Property Values" [IANA-IDNA] registry after the expert reviewer checked that the derived property values were calculated correctly. Validated, no cap 🫶

7. Security Considerations 🔒

Okay bestie, serious moment incoming 🥺. This document makes recommendations about using the IDNA2008 algorithm to calculate derived property values, based on Unicode version 12.0.0. It does not say anything about what to recommend for future versions of the Unicode Standard, so please don't go assuming 🙈

Not following these recommendations can lead to various security issues. 😭

Specifically, allowing confusable characters may lead to various phishing attacks, as described in the Security Consideration Sections in the documents listed in Section 2.1. Lookalike characters are literally how scammers eat, so take this seriously 💀

8. References 📚

8.1. Normative References

[RFC3491] Hoffman, P. and M. Blanchet, "Nameprep: A Stringprep Profile for Internationalized Domain Names (IDN)", RFC 3491, DOI 10.17487/RFC3491, March 2003, <https://www.rfc-editor.org/info/rfc3491>.

[RFC5890] Klensin, J., "Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework", RFC 5890, DOI 10.17487/RFC5890, August 2010, <https://www.rfc-editor.org/info/rfc5890>.

[RFC5891] Klensin, J., "Internationalized Domain Names in Applications (IDNA): Protocol", RFC 5891, DOI 10.17487/RFC5891, August 2010, <https://www.rfc-editor.org/info/rfc5891>.

[RFC5892] Faltstrom, P., Ed., "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA)", RFC 5892, DOI 10.17487/RFC5892, August 2010, <https://www.rfc-editor.org/info/rfc5892>.

[RFC5893] Alvestrand, H., Ed. and C. Karp, "Right-to-Left Scripts for Internationalized Domain Names for Applications (IDNA)", RFC 5893, DOI 10.17487/RFC5893, August 2010, <https://www.rfc-editor.org/info/rfc5893>.

[RFC6452] Faltstrom, P., Ed. and P. Hoffman, Ed., "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) - Unicode 6.0", RFC 6452, DOI 10.17487/RFC6452, November 2011, <https://www.rfc-editor.org/info/rfc6452>.

8.2. Informative References

[IAB2005-1] Internet Architecture Board, "IAB Statement on Identifiers and Unicode 7.0.0", 27 January 2015, <https://www.iab.org/documents/correspondence-reports-documents/2015-2/iab-statement-on-identifiers-and-unicode-7-0-0/archive/>.

[IAB2005-2] Internet Architecture Board, "IAB Statement on Identifiers and Unicode 7.0.0", 11 February 2015, <https://www.iab.org/documents/correspondence-reports-documents/2015-2/iab-statement-on-identifiers-and-unicode-7-0-0/>.

[IANA-IDNA] IANA, "IDNA Rules and Derived Property Values", February 2022, <https://www.iana.org/assignments/idna-tables-12.0.0/>.

[IDNA7] Klensin, J. C. and P. Faltstrom, "IDNA Update for Unicode 7.0 and Later Versions", Work in Progress, Internet-Draft, draft-klensin-idna-5892upd-unicode70-05, 8 October 2017, <https://datatracker.ietf.org/doc/html/draft-klensin-idna-5892upd-unicode70-05>.

[RFC3454] Hoffman, P. and M. Blanchet, "Preparation of Internationalized Strings ("stringprep")", RFC 3454, DOI 10.17487/RFC3454, December 2002, <https://www.rfc-editor.org/info/rfc3454>.

[RFC3490] Faltstrom, P., Hoffman, P., and A. Costello, "Internationalizing Domain Names in Applications (IDNA)", RFC 3490, DOI 10.17487/RFC3490, March 2003, <https://www.rfc-editor.org/info/rfc3490>.

[RFC5894] Klensin, J., "Internationalized Domain Names for Applications (IDNA): Background, Explanation, and Rationale", RFC 5894, DOI 10.17487/RFC5894, August 2010, <https://www.rfc-editor.org/info/rfc5894>.

[RFC5895] Resnick, P. and P. Hoffman, "Mapping Characters for Internationalized Domain Names in Applications (IDNA) 2008", RFC 5895, DOI 10.17487/RFC5895, September 2010, <https://www.rfc-editor.org/info/rfc5895>.

[RFC6912] Sullivan, A., Thaler, D., Klensin, J., and O. Kolkman, "Principles for Unicode Code Point Inclusion in Labels in the DNS", RFC 6912, DOI 10.17487/RFC6912, April 2013, <https://www.rfc-editor.org/info/rfc6912>.

[RFC8753] Klensin, J. and P. Fältström, "Internationalized Domain Names for Applications (IDNA) Review for New Unicode Versions", RFC 8753, DOI 10.17487/RFC8753, April 2020, <https://www.rfc-editor.org/info/rfc8753>.

[SAC-084] The Security and Stability Advisory Committee, "SAC084", SSAC Comments on Guidelines for the Extended Process Similarity Review Panel for the IDN ccTLD Fast Track Process, August 2016, <https://www.icann.org/en/system/files/files/sac-084-en.pdf>.

[Unicode-3.2.0] The Unicode Consortium, "The Unicode Standard, Version 3.2.0", Mountain View: The Unicode Consortium, ISBN 0-201-61633-5, March 2002, <https://www.unicode.org/versions/Unicode3.2.0/>.

[Unicode-5.2.0] The Unicode Consortium, "The Unicode Standard, Version 5.2.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-00-9, October 2009, <https://www.unicode.org/versions/Unicode5.2.0/>.

[Unicode-6.0.0] The Unicode Consortium, "The Unicode Standard, Version 6.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-01-6, October 2011, <https://www.unicode.org/versions/Unicode6.0.0/>.

[Unicode-7.0.0] The Unicode Consortium, "The Unicode Standard, Version 7.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-09-2, June 2014, <https://www.unicode.org/versions/Unicode7.0.0/>.

[Unicode-8.0.0] The Unicode Consortium, "The Unicode Standard, Version 8.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-10-8, June 2015, <https://www.unicode.org/versions/Unicode8.0.0/>.

[Unicode-10.0.0] The Unicode Consortium, "The Unicode Standard, Version 10.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-16-0, June 2017, <https://www.unicode.org/versions/Unicode10.0.0/>.

[Unicode-11.0.0] The Unicode Consortium, "The Unicode Standard, Version 11.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-19-1, June 2018, <https://www.unicode.org/versions/Unicode11.0.0/>.

[Unicode-12.0.0] The Unicode Consortium, "The Unicode Standard, Version 12.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-22-1, March 2019, <https://www.unicode.org/versions/Unicode12.0.0/>.

[UTS-46] The Unicode Consortium, "Unicode Technical Standard #46, Version 12.0.0", UNICODE IDNA COMPATIBILITY PROCESSING, March 2019, <https://www.unicode.org/reports/tr46/tr46-23.html>.

Appendix A. Changes from Unicode 6.0.0 to Unicode 7.0.0 🌈

Okay this appendix is a whole glow-up list ✨. These are the changes from derived property value UNASSIGNED to either PVALID or DISALLOWED.

037F        ; DISALLOWED # GREEK CAPITAL LETTER YOT
0528        ; DISALLOWED # CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK
0529        ; PVALID     # CYRILLIC SMALL LETTER EN WITH LEFT HOOK
052A        ; DISALLOWED # CYRILLIC CAPITAL LETTER DZZHE
052B        ; PVALID     # CYRILLIC SMALL LETTER DZZHE
052C        ; DISALLOWED # CYRILLIC CAPITAL LETTER DCHE
052D        ; PVALID     # CYRILLIC SMALL LETTER DCHE
052E        ; DISALLOWED # CYRILLIC CAPITAL LETTER EL WITH DESCENDER
052F        ; PVALID     # CYRILLIC SMALL LETTER EL WITH DESCENDER
058D..058F  ; DISALLOWED # RIGHT-FACING ARMENIAN ETERNITY SIGN..ARMENIAN
0604..0605  ; DISALLOWED # ARABIC SIGN SAMVAT..ARABIC NUMBER MARK ABOVE
061C        ; DISALLOWED # ARABIC LETTER MARK
08A0..08B2  ; PVALID     # ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC
08E4..08FF  ; PVALID     # ARABIC CURLY FATHA..ARABIC MARK SIDEWAYS NOON
0978        ; PVALID     # DEVANAGARI LETTER MARWARI DDA
0980        ; PVALID     # BENGALI ANJI
0AF0        ; DISALLOWED # GUJARATI ABBREVIATION SIGN
0C00        ; PVALID     # TELUGU SIGN COMBINING CANDRABINDU ABOVE
0C34        ; PVALID     # TELUGU LETTER LLLA
0C81        ; PVALID     # KANNADA SIGN CANDRABINDU
0D01        ; PVALID     # MALAYALAM SIGN CANDRABINDU
0DE6..0DEF  ; PVALID     # SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT N
0EDE..0EDF  ; PVALID     # LAO LETTER KHMU GO..LAO LETTER KHMU NYO
10C7        ; DISALLOWED # GEORGIAN CAPITAL LETTER YN
10CD        ; DISALLOWED # GEORGIAN CAPITAL LETTER AEN
10FD..10FF  ; PVALID     # GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL S
16F1..16F8  ; PVALID     # RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AE
17B4..17B5  ; DISALLOWED # KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT
191D..191E  ; PVALID     # LIMBU LETTER GYAN..LIMBU LETTER TRA
1AB0..1ABD  ; PVALID     # COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBININ
1ABE        ; DISALLOWED # COMBINING PARENTHESES OVERLAY
1BAB..1BAD  ; PVALID     # SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SI
1BBA..1BBF  ; PVALID     # SUNDANESE AVAGRAHA..SUNDANESE LETTER FINAL M
1CC0..1CC7  ; DISALLOWED # SUNDANESE PUNCTUATION BINDU SURYA..SUNDANESE
1CF3..1CF6  ; PVALID     # VEDIC SIGN ROTATED ARDHAVISARGA..VEDIC SIGN U
1CF8..1CF9  ; PVALID     # VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING
1DE7..1DF5  ; PVALID     # COMBINING LATIN SMALL LETTER ALPHA..COMBINING
2066..2069  ; DISALLOWED # LEFT-TO-RIGHT ISOLATE..POP DIRECTIONAL ISOLAT
20BA..20BD  ; DISALLOWED # TURKISH LIRA SIGN..RUBLE SIGN
23F4..23FA  ; DISALLOWED # BLACK MEDIUM LEFT-POINTING TRIANGLE..BLACK CI
2700        ; DISALLOWED # BLACK SAFETY SCISSORS
27CB        ; DISALLOWED # MATHEMATICAL RISING DIAGONAL
27CD        ; DISALLOWED # MATHEMATICAL FALLING DIAGONAL
2B4D..2B4F  ; DISALLOWED # DOWNWARDS TRIANGLE-HEADED ZIGZAG ARROW..SHORT
2B5A..2B73  ; DISALLOWED # SLANTED NORTH ARROW WITH HOOKED HEAD..DOWNWAR
2B76..2B95  ; DISALLOWED # NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGH
2B98..2BB9  ; DISALLOWED # THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARR
2BBD..2BC8  ; DISALLOWED # BALLOT BOX WITH LIGHT X..BLACK MEDIUM RIGHT-P
2BCA..2BD1  ; DISALLOWED # TOP HALF BLACK CIRCLE..UNCERTAINTY SIGN
2CF2        ; DISALLOWED # COPTIC CAPITAL LETTER BOHAIRIC KHEI
2CF3        ; PVALID     # COPTIC SMALL LETTER BOHAIRIC KHEI
2D27        ; PVALID     # GEORGIAN SMALL LETTER YN
2D2D        ; PVALID     # GEORGIAN SMALL LETTER AEN
2D66..2D67  ; PVALID     # TIFINAGH LETTER YE..TIFINAGH LETTER YO
2E32..2E42  ; DISALLOWED # TURNED COMMA..DOUBLE LOW-REVERSED-9 QUOTATION
9FCC        ; PVALID     # <CJK Ideograph>
A674..A67B  ; PVALID     # COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBI
A698        ; DISALLOWED # CYRILLIC CAPITAL LETTER DOUBLE O
A699        ; PVALID     # CYRILLIC SMALL LETTER DOUBLE O
A69A        ; DISALLOWED # CYRILLIC CAPITAL LETTER CROSSED O
A69B        ; PVALID     # CYRILLIC SMALL LETTER CROSSED O

okay bestie, picking up right where we left off 💖 this chunk is the next stretch of the codepoint table, so every range is copied exactly, even the cut-off labels 🎀 the Chakma, Grantha, and Arabic math entries are giving alphabet soup 🍜 no notes, no edits, just vibes and precision 💅

A69C..A69D  ; DISALLOWED # MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER
A69F        ; PVALID     # COMBINING CYRILLIC LETTER IOTIFIED E
A792        ; DISALLOWED # LATIN CAPITAL LETTER C WITH BAR
A793..A795  ; PVALID     # LATIN SMALL LETTER C WITH BAR..LATIN SMALL LE
A796        ; DISALLOWED # LATIN CAPITAL LETTER B WITH FLOURISH
A797        ; PVALID     # LATIN SMALL LETTER B WITH FLOURISH
A798        ; DISALLOWED # LATIN CAPITAL LETTER F WITH STROKE
A799        ; PVALID     # LATIN SMALL LETTER F WITH STROKE
A79A        ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK AE
A79B        ; PVALID     # LATIN SMALL LETTER VOLAPUK AE
A79C        ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK OE
A79D        ; PVALID     # LATIN SMALL LETTER VOLAPUK OE
A79E        ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK UE
A79F        ; PVALID     # LATIN SMALL LETTER VOLAPUK UE
A7AA..A7AD  ; DISALLOWED # LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPIT
A7B0..A7B1  ; DISALLOWED # LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL
A7F7        ; PVALID     # LATIN EPIGRAPHIC LETTER SIDEWAYS I
A7F8..A7F9  ; DISALLOWED # MODIFIER LETTER CAPITAL H WITH STROKE..MODIFI
A9E0..A9FE  ; PVALID     # MYANMAR LETTER SHAN GHA..MYANMAR LETTER TAI L
AA7C..AA7F  ; PVALID     # MYANMAR SIGN TAI LAING TONE-2..MYANMAR LETTER
AAE0..AAEF  ; PVALID     # MEETEI MAYEK LETTER E..MEETEI MAYEK VOWEL SIG
AAF0..AAF1  ; DISALLOWED # MEETEI MAYEK CHEIKHAN..MEETEI MAYEK AHANG KHU
AAF2..AAF6  ; PVALID     # MEETEI MAYEK ANJI..MEETEI MAYEK VIRAMA
AB30..AB5A  ; PVALID     # LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL
AB5B..AB5F  ; DISALLOWED # MODIFIER BREVE WITH INVERTED BREVE..MODIFIER
AB64..AB65  ; PVALID     # LATIN SMALL LETTER INVERTED ALPHA..GREEK LETT
FA2E..FA2F  ; DISALLOWED # CJK COMPATIBILITY IDEOGRAPH-FA2E..CJK COMPATI
FE27..FE2D  ; PVALID     # COMBINING LIGATURE LEFT HALF BELOW..COMBINING
1018B..1018C; DISALLOWED # GREEK ONE QUARTER SIGN..GREEK SINUSOID SIGN
101A0       ; DISALLOWED # GREEK SYMBOL TAU RHO
102E0       ; PVALID     # COPTIC EPACT THOUSANDS MARK
102E1..102FB; DISALLOWED # COPTIC EPACT DIGIT ONE..COPTIC EPACT NUMBER N
1031F       ; PVALID     # OLD ITALIC LETTER ESS
10350..1037A; PVALID     # OLD PERMIC LETTER AN..COMBINING OLD PERMIC LE
10500..10527; PVALID     # ELBASAN LETTER A..ELBASAN LETTER KHE
10530..10563; PVALID     # CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBA
1056F       ; DISALLOWED # CAUCASIAN ALBANIAN CITATION MARK
10600..10736; PVALID     # LINEAR A SIGN AB001..LINEAR A SIGN A664
10740..10755; PVALID     # LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
10760..10767; PVALID     # LINEAR A SIGN A800..LINEAR A SIGN A807
10860..10876; PVALID     # PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
10877..1087F; DISALLOWED # PALMYRENE LEFT-POINTING FLEURON..PALMYRENE NU
10880..1089E; PVALID     # NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTE
108A7..108AF; DISALLOWED # NABATAEAN NUMBER ONE..NABATAEAN NUMBER ONE HU
10980..109B7; PVALID     # MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURS
109BE..109BF; PVALID     # MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSI
10A80..10A9C; PVALID     # OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABI
10A9D..10A9F; DISALLOWED # OLD NORTH ARABIAN NUMBER ONE..OLD NORTH ARABI
10AC0..10AC7; PVALID     # MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WA
10AC8       ; DISALLOWED # MANICHAEAN SIGN UD
10AC9..10AE6; PVALID     # MANICHAEAN LETTER ZAYIN..MANICHAEAN ABBREVIAT
10AEB..10AF6; DISALLOWED # MANICHAEAN NUMBER ONE..MANICHAEAN PUNCTUATION
10B80..10B91; PVALID     # PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI
10B99..10B9C; DISALLOWED # PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI
10BA9..10BAF; DISALLOWED # PSALTER PAHLAVI NUMBER ONE..PSALTER PAHLAVI N
1107F       ; PVALID     # BRAHMI NUMBER JOINER
110D0..110E8; PVALID     # SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER
110F0..110F9; PVALID     # SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT N
11100..11134; PVALID     # CHAKMA SIGN CANDRABINDU..CHAKMA MAAYYAA
11136..1113F; PVALID     # CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE
11140..11143; DISALLOWED # CHAKMA SECTION MARK..CHAKMA QUESTION MARK
11150..11173; PVALID     # MAHAJANI LETTER A..MAHAJANI SIGN NUKTA
11174..11175; DISALLOWED # MAHAJANI ABBREVIATION SIGN..MAHAJANI SECTION
11176       ; PVALID     # MAHAJANI LIGATURE SHRI
11180..111C4; PVALID     # SHARADA SIGN CANDRABINDU..SHARADA OM
111C5..111C8; DISALLOWED # SHARADA DANDA..SHARADA SEPARATOR
111CD       ; DISALLOWED # SHARADA SUTRA MARK
111D0..111DA; PVALID     # SHARADA DIGIT ZERO..SHARADA EKAM
111E1..111F4; DISALLOWED # SINHALA ARCHAIC DIGIT ONE..SINHALA ARCHAIC NU
11200..11211; PVALID     # KHOJKI LETTER A..KHOJKI LETTER JJA
11213..11237; PVALID     # KHOJKI LETTER NYA..KHOJKI SIGN SHADDA
11238..1123D; DISALLOWED # KHOJKI DANDA..KHOJKI ABBREVIATION SIGN
112B0..112EA; PVALID     # KHUDAWADI LETTER A..KHUDAWADI SIGN VIRAMA
112F0..112F9; PVALID     # KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE
11301..11303; PVALID     # GRANTHA SIGN CANDRABINDU..GRANTHA SIGN VISARG
11305..1130C; PVALID     # GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
1130F..11310; PVALID     # GRANTHA LETTER EE..GRANTHA LETTER AI
11313..11328; PVALID     # GRANTHA LETTER OO..GRANTHA LETTER NA
1132A..11330; PVALID     # GRANTHA LETTER PA..GRANTHA LETTER RA
11332..11333; PVALID     # GRANTHA LETTER LA..GRANTHA LETTER LLA
11335..11339; PVALID     # GRANTHA LETTER VA..GRANTHA LETTER HA
1133C..11344; PVALID     # GRANTHA SIGN NUKTA..GRANTHA VOWEL SIGN VOCALI
11347..11348; PVALID     # GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
1134B..1134D; PVALID     # GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
11357       ; PVALID     # GRANTHA AU LENGTH MARK
1135D..11363; PVALID     # GRANTHA SIGN PLUTA..GRANTHA VOWEL SIGN VOCALI
11366..1136C; PVALID     # COMBINING GRANTHA DIGIT ZERO..COMBINING GRANT
11370..11374; PVALID     # COMBINING GRANTHA LETTER A..COMBINING GRANTHA
11480..114C5; PVALID     # TIRHUTA ANJI..TIRHUTA GVANG
114C6       ; DISALLOWED # TIRHUTA ABBREVIATION SIGN
114C7       ; PVALID     # TIRHUTA OM
114D0..114D9; PVALID     # TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
11580..115B5; PVALID     # SIDDHAM LETTER A..SIDDHAM VOWEL SIGN VOCALIC
115B8..115C0; PVALID     # SIDDHAM VOWEL SIGN E..SIDDHAM SIGN NUKTA
115C1..115C9; DISALLOWED # SIDDHAM SIGN SIDDHAM..SIDDHAM END OF TEXT MAR
11600..11640; PVALID     # MODI LETTER A..MODI SIGN ARDHACANDRA
11641..11643; DISALLOWED # MODI DANDA..MODI ABBREVIATION SIGN
11644       ; PVALID     # MODI SIGN HUVA
11650..11659; PVALID     # MODI DIGIT ZERO..MODI DIGIT NINE
11680..116B7; PVALID     # TAKRI LETTER A..TAKRI SIGN NUKTA
116C0..116C9; PVALID     # TAKRI DIGIT ZERO..TAKRI DIGIT NINE
118A0..118BF; DISALLOWED # WARANG CITI CAPITAL LETTER NGAA..WARANG CITI
118C0..118E9; PVALID     # WARANG CITI SMALL LETTER NGAA..WARANG CITI DI
118EA..118F2; DISALLOWED # WARANG CITI NUMBER TEN..WARANG CITI NUMBER NI
118FF       ; PVALID     # WARANG CITI OM
11AC0..11AF8; PVALID     # PAU CIN HAU LETTER PA..PAU CIN HAU GLOTTAL ST
1236F..12398; PVALID     # CUNEIFORM SIGN KAP ELAMITE..CUNEIFORM SIGN UM
12463..1246E; DISALLOWED # CUNEIFORM NUMERIC SIGN ONE QUARTER GUR..CUNEI
12474       ; DISALLOWED # CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON
16A40..16A5E; PVALID     # MRO LETTER TA..MRO LETTER TEK
16A60..16A69; PVALID     # MRO DIGIT ZERO..MRO DIGIT NINE
16A6E..16A6F; DISALLOWED # MRO DANDA..MRO DOUBLE DANDA
16AD0..16AED; PVALID     # BASSA VAH LETTER ENNI..BASSA VAH LETTER I
16AF0..16AF4; PVALID     # BASSA VAH COMBINING HIGH TONE..BASSA VAH COMB
16AF5       ; DISALLOWED # BASSA VAH FULL STOP
16B00..16B36; PVALID     # PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG MARK CI
16B37..16B3F; DISALLOWED # PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN
16B40..16B43; PVALID     # PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN
16B44..16B45; DISALLOWED # PAHAWH HMONG SIGN XAUS..PAHAWH HMONG SIGN CIM
16B50..16B59; PVALID     # PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT N
16B5B..16B61; DISALLOWED # PAHAWH HMONG NUMBER TENS..PAHAWH HMONG NUMBER
16B63..16B77; PVALID     # PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN
16B7D..16B8F; PVALID     # PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG C
16F00..16F44; PVALID     # MIAO LETTER PA..MIAO LETTER HHA
16F50..16F7E; PVALID     # MIAO LETTER NASALIZATION..MIAO VOWEL SIGN NG
16F8F..16F9F; PVALID     # MIAO TONE RIGHT..MIAO LETTER REFORMED TONE-8
1BC00..1BC6A; PVALID     # DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
1BC70..1BC7C; PVALID     # DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOY
1BC80..1BC88; PVALID     # DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIG
1BC90..1BC99; PVALID     # DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW
1BC9C       ; DISALLOWED # DUPLOYAN SIGN O WITH CROSS
1BC9D..1BC9E; PVALID     # DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUB
1BC9F..1BCA3; DISALLOWED # DUPLOYAN PUNCTUATION CHINOOK FULL STOP..SHORT
1E800..1E8C4; PVALID     # MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI
1E8C7..1E8CF; DISALLOWED # MENDE KIKAKUI DIGIT ONE..MENDE KIKAKUI DIGIT
1E8D0..1E8D6; PVALID     # MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE K
1EE00..1EE03; DISALLOWED # ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL
1EE05..1EE1F; DISALLOWED # ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL
1EE21..1EE22; DISALLOWED # ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHE
1EE24       ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HEH
1EE27       ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HAH
1EE29..1EE32; DISALLOWED # ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHE
1EE34..1EE37; DISALLOWED # ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MAT
1EE39       ; DISALLOWED # ARABIC MATHEMATICAL INITIAL DAD
1EE3B       ; DISALLOWED # ARABIC MATHEMATICAL INITIAL GHAIN
1EE42       ; DISALLOWED # ARABIC MATHEMATICAL TAILED JEEM
1EE47       ; DISALLOWED # ARABIC MATHEMATICAL TAILED HAH
1EE49       ; DISALLOWED # ARABIC MATHEMATICAL TAILED YEH
1EE4B       ; DISALLOWED # ARABIC MATHEMATICAL TAILED LAM
1EE4D..1EE4F; DISALLOWED # ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHE
1EE51..1EE52; DISALLOWED # ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEM
1EE54       ; DISALLOWED # ARABIC MATHEMATICAL TAILED SHEEN
1EE57       ; DISALLOWED # ARABIC MATHEMATICAL TAILED KHAH
1EE59       ; DISALLOWED # ARABIC MATHEMATICAL TAILED DAD
1EE5B       ; DISALLOWED # ARABIC MATHEMATICAL TAILED GHAIN
1EE5D       ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS NOON
1EE5F       ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS QAF
1EE61..1EE62; DISALLOWED # ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MAT
1EE64       ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HEH
1EE67..1EE6A; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MAT
1EE6C..1EE72; DISALLOWED # ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MA
1EE74..1EE77; DISALLOWED # ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC M
1EE79..1EE7C; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MAT
1EE7E       ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
1EE80..1EE89; DISALLOWED # ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHE
1EE8B..1EE9B; DISALLOWED # ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEM
1EEA1..1EEA3; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC
1EEA5..1EEA9; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC
1EEAB..1EEBB; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC
1EEF0..1EEF1; DISALLOWED # ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WI
1F0BF       ; DISALLOWED # PLAYING CARD RED JOKER
1F0E0..1F0F5; DISALLOWED # PLAYING CARD FOOL..PLAYING CARD TRUMP-21
1F10B..1F10C; DISALLOWED # DINGBAT CIRCLED SANS-SERIF DIGIT ZERO..DINGBA
1F16A..1F16B; DISALLOWED # RAISED MC SIGN..RAISED MD SIGN
1F321..1F32C; DISALLOWED # THERMOMETER..WIND BLOWING FACE
1F336       ; DISALLOWED # HOT PEPPER
1F37D       ; DISALLOWED # FORK AND KNIFE WITH PLATE
1F394..1F39F; DISALLOWED # HEART WITH TIP ON THE LEFT..ADMISSION TICKETS
1F3C5       ; DISALLOWED # SPORTS MEDAL
1F3CB..1F3CE; DISALLOWED # WEIGHT LIFTER..RACING CAR
1F3D4..1F3DF; DISALLOWED # SNOW CAPPED MOUNTAIN..STADIUM
the Arabic mathematical block is LONG, so take a breath and hydrate 💧🌸
1F3F1..1F3F7; DISALLOWED # WHITE PENNANT..LABEL
1F43F       ; DISALLOWED # CHIPMUNK
1F441       ; DISALLOWED # EYE
1F4F8       ; DISALLOWED # CAMERA WITH FLASH
1F4FD..1F4FE; DISALLOWED # FILM PROJECTOR..PORTABLE STEREO
1F53E..1F54A; DISALLOWED # LOWER RIGHT SHADOWED WHITE CIRCLE..DOVE OF PE
1F568..1F579; DISALLOWED # RIGHT SPEAKER..JOYSTICK
1F57B..1F5A3; DISALLOWED # LEFT HAND TELEPHONE RECEIVER..BLACK DOWN POIN
1F5A5..1F5FA; DISALLOWED # DESKTOP COMPUTER..WORLD MAP
1F600       ; DISALLOWED # GRINNING FACE
1F611       ; DISALLOWED # EXPRESSIONLESS FACE
1F615       ; DISALLOWED # CONFUSED FACE
1F617       ; DISALLOWED # KISSING FACE
1F619       ; DISALLOWED # KISSING FACE WITH SMILING EYES
1F61B       ; DISALLOWED # FACE WITH STUCK-OUT TONGUE
1F61F       ; DISALLOWED # WORRIED FACE
1F626..1F627; DISALLOWED # FROWNING FACE WITH OPEN MOUTH..ANGUISHED FACE
1F62C       ; DISALLOWED # GRIMACING FACE
1F62E..1F62F; DISALLOWED # FACE WITH OPEN MOUTH..HUSHED FACE
1F634       ; DISALLOWED # SLEEPING FACE
1F641..1F642; DISALLOWED # SLIGHTLY FROWNING FACE..SLIGHTLY SMILING FACE
1F650..1F67F; DISALLOWED # NORTH WEST POINTING LEAF..REVERSE CHECKER BOA
1F6C6..1F6CF; DISALLOWED # TRIANGLE WITH ROUNDED CORNERS..BED
1F6E0..1F6EC; DISALLOWED # HAMMER AND WRENCH..AIRPLANE ARRIVING
1F6F0..1F6F3; DISALLOWED # SATELLITE..PASSENGER SHIP
1F780..1F7D4; DISALLOWED # BLACK LEFT-POINTING ISOSCELES RIGHT TRIANGLE.
1F800..1F80B; DISALLOWED # LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD
1F810..1F847; DISALLOWED # LEFTWARDS ARROW WITH SMALL EQUILATERAL ARROWH
1F850..1F859; DISALLOWED # LEFTWARDS SANS-SERIF ARROW..UP DOWN SANS-SERI
1F860..1F887; DISALLOWED # WIDE-HEADED LEFTWARDS LIGHT BARB ARROW..WIDE-
1F890..1F8AD; DISALLOWED # LEFTWARDS TRIANGLE ARROWHEAD..WHITE ARROW SHA

Appendix B. Changes from Unicode 7.0.0 to Unicode 8.0.0 🌸

Okay, this is the Unicode 8.0.0 glow-up list 📝✨. Every code point here used to be UNASSIGNED and got promoted to either PVALID or DISALLOWED. Here's the tea:

08B3..08B4  ; PVALID     # ARABIC LETTER AIN WITH THREE DOTS BELOW..ARAB
08E3        ; PVALID     # ARABIC TURNED DAMMA BELOW
0AF9        ; PVALID     # GUJARATI LETTER ZHA
0C5A        ; PVALID     # TELUGU LETTER RRRA
0D5F        ; PVALID     # MALAYALAM LETTER ARCHAIC II
13F5        ; PVALID     # CHEROKEE LETTER MV
13F8..13FD  ; DISALLOWED # CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETT
20BE        ; DISALLOWED # LARI SIGN
218A..218B  ; DISALLOWED # TURNED DIGIT TWO..TURNED DIGIT THREE
2BEC..2BEF  ; DISALLOWED # LEFTWARDS TWO-HEADED ARROW WITH TRIANGLE ARRO
9FCD..9FD5  ; PVALID     # <CJK Ideograph>..<CJK Ideograph>
A69E        ; PVALID     # COMBINING CYRILLIC LETTER EF
A78F        ; PVALID     # LATIN LETTER SINOLOGICAL DOT
A7B2..A7B4  ; DISALLOWED # LATIN CAPITAL LETTER J WITH CROSSED-TAIL..LAT
A7B5        ; PVALID     # LATIN SMALL LETTER BETA
A7B6        ; DISALLOWED # LATIN CAPITAL LETTER OMEGA
A7B7        ; PVALID     # LATIN SMALL LETTER OMEGA
A8FC        ; DISALLOWED # DEVANAGARI SIGN SIDDHAM
A8FD        ; PVALID     # DEVANAGARI JAIN OM
AB60..AB63  ; PVALID     # LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LET
AB70..ABBF  ; DISALLOWED # CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTE
FE2E..FE2F  ; PVALID     # COMBINING CYRILLIC TITLO LEFT HALF..COMBINING
108E0..108F2; PVALID     # HATRAN LETTER ALEPH..HATRAN LETTER QOPH
108F4..108F5; PVALID     # HATRAN LETTER SHIN..HATRAN LETTER TAW
108FB..108FF; DISALLOWED # HATRAN NUMBER ONE..HATRAN NUMBER ONE HUNDRED
109BC..109BD; DISALLOWED # MEROITIC CURSIVE FRACTION ELEVEN TWELFTHS..ME
109C0..109CF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE..MEROITIC CURSIVE
109D2..109FF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE HUNDRED..MEROITIC
10C80..10CB2; DISALLOWED # OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN
10CC0..10CF2; PVALID     # OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN S
10CFA..10CFF; DISALLOWED # OLD HUNGARIAN NUMBER ONE..OLD HUNGARIAN NUMBE
111C9       ; DISALLOWED # SHARADA SANDHI MARK
111CA..111CC; PVALID     # SHARADA SIGN NUKTA..SHARADA EXTRA SHORT VOWEL
111DB       ; DISALLOWED # SHARADA SIGN SIDDHAM
111DC       ; PVALID     # SHARADA HEADSTROKE
111DD..111DF; DISALLOWED # SHARADA CONTINUATION SIGN..SHARADA SECTION MA
11280..11286; PVALID     # MULTANI LETTER A..MULTANI LETTER GA
11288       ; PVALID     # MULTANI LETTER GHA
1128A..1128D; PVALID     # MULTANI LETTER CA..MULTANI LETTER JJA
1128F..1129D; PVALID     # MULTANI LETTER NYA..MULTANI LETTER BA
1129F..112A8; PVALID     # MULTANI LETTER BHA..MULTANI LETTER RHA
112A9       ; DISALLOWED # MULTANI SECTION MARK
11300       ; PVALID     # GRANTHA SIGN COMBINING ANUSVARA ABOVE
11350       ; PVALID     # GRANTHA OM
115CA..115D7; DISALLOWED # SIDDHAM SECTION MARK WITH TRIDENT AND U-SHAPE
115D8..115DD; PVALID     # SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDD
11700..11719; PVALID     # AHOM LETTER KA..AHOM LETTER JHA
1171D..1172B; PVALID     # AHOM CONSONANT SIGN MEDIAL LA..AHOM SIGN KILL
11730..11739; PVALID     # AHOM DIGIT ZERO..AHOM DIGIT NINE
1173A..1173F; DISALLOWED # AHOM NUMBER TEN..AHOM SYMBOL VI
12399       ; PVALID     # CUNEIFORM SIGN U U
12480..12543; PVALID     # CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM S
14400..14646; PVALID     # ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLY
1D1DE..1D1E8; DISALLOWED # MUSICAL SYMBOL KIEVAN C CLEF..MUSICAL SYMBOL
1D800..1D9FF; DISALLOWED # SIGNWRITING HAND-FIST INDEX..SIGNWRITING HEAD
1DA00..1DA36; PVALID     # SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING
1DA37..1DA3A; DISALLOWED # SIGNWRITING AIR BLOW SMALL ROTATIONS..SIGNWRI
1DA3B..1DA6C; PVALID     # SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING
1DA6D..1DA74; DISALLOWED # SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING T
1DA75       ; PVALID     # SIGNWRITING UPPER BODY TILTING FROM HIP JOINT
1DA76..1DA83; DISALLOWED # SIGNWRITING LIMB COMBINATION..SIGNWRITING LOC
1DA84       ; PVALID     # SIGNWRITING LOCATION HEAD NECK
1DA85..1DA8B; DISALLOWED # SIGNWRITING LOCATION TORSO..SIGNWRITING PAREN
1DA9B..1DA9F; PVALID     # SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL
1DAA1..1DAAF; PVALID     # SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING
1F32D..1F32F; DISALLOWED # HOT DOG..BURRITO
1F37E..1F37F; DISALLOWED # BOTTLE WITH POPPING CORK..POPCORN
1F3CF..1F3D3; DISALLOWED # CRICKET BAT AND BALL..TABLE TENNIS PADDLE AND
1F3F8..1F3FF; DISALLOWED # BADMINTON RACQUET AND SHUTTLECOCK..EMOJI MODI
1F4FF       ; DISALLOWED # PRAYER BEADS
1F54B..1F54F; DISALLOWED # KAABA..BOWL OF HYGIEIA
1F643..1F644; DISALLOWED # UPSIDE-DOWN FACE..FACE WITH ROLLING EYES
1F6D0       ; DISALLOWED # PLACE OF WORSHIP
1F910..1F918; DISALLOWED # ZIPPER-MOUTH FACE..SIGN OF THE HORNS
1F980..1F984; DISALLOWED # CRAB..UNICORN FACE
1F9C0       ; DISALLOWED # CHEESE WEDGE
2B820..2CEA1; PVALID     # <CJK Ideograph Extension E>..<CJK Ideograph E

Appendix C. Changes from Unicode 8.0.0 to Unicode 9.0.0 💖

Next up is the Unicode 9.0.0 upgrade 🎀. Same vibe as before: these code points went from UNASSIGNED to either PVALID or DISALLOWED, and the table below has all the receipts.

08B6..08BD  ; PVALID     # ARABIC LETTER BEH WITH SMALL MEEM ABOVE..ARAB
08D4..08E1  ; PVALID     # ARABIC SMALL HIGH WORD AR-RUB..ARABIC SMALL H
08E2        ; DISALLOWED # ARABIC DISPUTED END OF AYAH
0C80        ; PVALID     # KANNADA SIGN SPACING CANDRABINDU
0D4F        ; DISALLOWED # MALAYALAM SIGN PARA
0D54..0D56  ; PVALID     # MALAYALAM LETTER CHILLU M..MALAYALAM LETTER C
0D58..0D5E  ; DISALLOWED # MALAYALAM FRACTION ONE ONE-HUNDRED-AND-SIXTIE
0D76..0D78  ; DISALLOWED # MALAYALAM FRACTION ONE SIXTEENTH..MALAYALAM F
1C80..1C88  ; DISALLOWED # CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SM
1DFB        ; PVALID     # COMBINING DELETION MARK
23FB..23FE  ; DISALLOWED # POWER SYMBOL..POWER SLEEP SYMBOL
2E43..2E44  ; DISALLOWED # DASH WITH LEFT UPTURN..DOUBLE SUSPENSION MARK
A7AE        ; DISALLOWED # LATIN CAPITAL LETTER SMALL CAPITAL I
A8C5        ; PVALID     # SAURASHTRA SIGN CANDRABINDU
1018D..1018E; DISALLOWED # GREEK INDICTION SIGN..NOMISMA SIGN
104B0..104D3; DISALLOWED # OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER
104D8..104FB; PVALID     # OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
1123E       ; PVALID     # KHOJKI SIGN SUKUN
11400..1144A; PVALID     # NEWA LETTER A..NEWA SIDDHI
1144B..1144F; DISALLOWED # NEWA DANDA..NEWA ABBREVIATION SIGN
11450..11459; PVALID     # NEWA DIGIT ZERO..NEWA DIGIT NINE
1145B       ; DISALLOWED # NEWA PLACEHOLDER MARK
1145D       ; DISALLOWED # NEWA INSERTION SIGN
11660..1166C; DISALLOWED # MONGOLIAN BIRGA WITH ORNAMENT..MONGOLIAN TURN
11C00..11C08; PVALID     # BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC
11C0A..11C36; PVALID     # BHAIKSUKI LETTER E..BHAIKSUKI VOWEL SIGN VOCA
11C38..11C40; PVALID     # BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN AVAGRA
11C41..11C45; DISALLOWED # BHAIKSUKI DANDA..BHAIKSUKI GAP FILLER-2
11C50..11C59; PVALID     # BHAIKSUKI DIGIT ZERO..BHAIKSUKI DIGIT NINE
11C5A..11C6C; DISALLOWED # BHAIKSUKI NUMBER ONE..BHAIKSUKI HUNDREDS UNIT
11C70..11C71; DISALLOWED # MARCHEN HEAD MARK..MARCHEN MARK SHAD
11C72..11C8F; PVALID     # MARCHEN LETTER KA..MARCHEN LETTER A
11C92..11CA7; PVALID     # MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINE
11CA9..11CB6; PVALID     # MARCHEN SUBJOINED LETTER YA..MARCHEN SIGN CAN
16FE0       ; PVALID     # TANGUT ITERATION MARK
17000..187EC; PVALID     # <Tangut Ideograph>..<Tangut Ideograph>
18800..18AF2; PVALID     # TANGUT COMPONENT-001..TANGUT COMPONENT-755
1E000..1E006; PVALID     # COMBINING GLAGOLITIC LETTER AZU..COMBINING GL
1E008..1E018; PVALID     # COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING
1E01B..1E021; PVALID     # COMBINING GLAGOLITIC LETTER SHTA..COMBINING G
1E023..1E024; PVALID     # COMBINING GLAGOLITIC LETTER YU..COMBINING GLA
1E026..1E02A; PVALID     # COMBINING GLAGOLITIC LETTER YO..COMBINING GLA
1E900..1E921; DISALLOWED # ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETT
1E922..1E94A; PVALID     # ADLAM SMALL LETTER ALIF..ADLAM NUKTA
1E950..1E959; PVALID     # ADLAM DIGIT ZERO..ADLAM DIGIT NINE
1E95E..1E95F; DISALLOWED # ADLAM INITIAL EXCLAMATION MARK..ADLAM INITIAL
1F19B..1F1AC; DISALLOWED # SQUARED THREE D..SQUARED VOD
1F23B       ; DISALLOWED # SQUARED CJK UNIFIED IDEOGRAPH-914D
1F57A       ; DISALLOWED # MAN DANCING
1F5A4       ; DISALLOWED # BLACK HEART
1F6D1..1F6D2; DISALLOWED # OCTAGONAL SIGN..SHOPPING TROLLEY
1F6F4..1F6F6; DISALLOWED # SCOOTER..CANOE
1F919..1F91E; DISALLOWED # CALL ME HAND..HAND WITH INDEX AND MIDDLE FING
1F920..1F927; DISALLOWED # FACE WITH COWBOY HAT..SNEEZING FACE
1F930       ; DISALLOWED # PREGNANT WOMAN
1F933..1F93E; DISALLOWED # SELFIE..HANDBALL
1F940..1F94B; DISALLOWED # WILTED FLOWER..MARTIAL ARTS UNIFORM
1F950..1F95E; DISALLOWED # CROISSANT..PANCAKES
1F985..1F991; DISALLOWED # EAGLE..SQUID

Appendix D. Changes from Unicode 9.0.0 to Unicode 10.0.0 🦋

Last glow-up in this batch: the Unicode 10.0.0 changes 🌈. Once more, these are the code points that moved from UNASSIGNED to either PVALID or DISALLOWED.

0860..086A  ; PVALID     # SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MA
09FC        ; PVALID     # BENGALI LETTER VEDIC ANUSVARA
09FD        ; DISALLOWED # BENGALI ABBREVIATION SIGN
0AFA..0AFF  ; PVALID     # GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE
0D00        ; PVALID     # MALAYALAM SIGN COMBINING ANUSVARA ABOVE
0D3B..0D3C  ; PVALID     # MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM
1CF7        ; PVALID     # VEDIC SIGN ATIKRAMA
1DF6..1DF9  ; PVALID     # COMBINING KAVYKA ABOVE RIGHT..COMBINING WIDE
20BF        ; DISALLOWED # BITCOIN SIGN
23FF        ; DISALLOWED # OBSERVER EYE SYMBOL
2BD2        ; DISALLOWED # GROUP MARK
2E45..2E49  ; DISALLOWED # INVERTED LOW KAVYKA..DOUBLE STACKED COMMA
312E        ; PVALID     # BOPOMOFO LETTER O WITH DOT ABOVE
9FD6..9FEA  ; PVALID     # <CJK Ideograph>..<CJK Ideograph>
1032D..1032F; PVALID     # OLD ITALIC LETTER YE..OLD ITALIC LETTER SOUTH
11A00..11A3E; PVALID     # ZANABAZAR SQUARE LETTER A..ZANABAZAR SQUARE C
11A3F..11A46; DISALLOWED # ZANABAZAR SQUARE INITIAL HEAD MARK..ZANABAZAR
11A47       ; PVALID     # ZANABAZAR SQUARE SUBJOINER
11A50..11A83; PVALID     # SOYOMBO LETTER A..SOYOMBO LETTER KSSA
11A86..11A99; PVALID     # SOYOMBO CLUSTER-INITIAL LETTER RA..SOYOMBO SU

11A9A..11A9C; DISALLOWED # SOYOMBO MARK TSHEG..SOYOMBO MARK DOUBLE SHAD 11A9E..11AA2; DISALLOWED # SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPL 11D00..11D06; PVALID # MASARAM GONDI LETTER A..MASARAM GONDI LETTER 11D08..11D09; PVALID # MASARAM GONDI LETTER AI..MASARAM GONDI LETTER 11D0B..11D36; PVALID # MASARAM GONDI LETTER AU..MASARAM GONDI VOWEL 11D3A ; PVALID # MASARAM GONDI VOWEL SIGN E 11D3C..11D3D; PVALID # MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VO 11D3F..11D47; PVALID # MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI RA 11D50..11D59; PVALID # MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT 16FE1 ; PVALID # NUSHU ITERATION MARK 1B002..1B11E; PVALID # HENTAIGANA LETTER A-1..HENTAIGANA LETTER N-MU 1B170..1B2FB; PVALID # NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB 1F260..1F265; DISALLOWED # ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI 1F6D3..1F6D4; DISALLOWED # STUPA..PAGODA 1F6F7..1F6F8; DISALLOWED # SLED..FLYING SAUCER 1F900..1F90B; DISALLOWED # CIRCLED CROSS FORMEE WITH FOUR DOTS..DOWNWARD 1F91F ; DISALLOWED # I LOVE YOU HAND SIGN 1F928..1F92F; DISALLOWED # FACE WITH ONE EYEBROW RAISED..SHOCKED FACE WI 1F931..1F932; DISALLOWED # BREAST-FEEDING..PALMS UP TOGETHER 1F94C ; DISALLOWED # CURLING STONE 1F95F..1F96B; DISALLOWED # DUMPLING..CANNED FOOD 1F992..1F997; DISALLOWED # GIRAFFE FACE..CRICKET 1F9D0..1F9E6; DISALLOWED # FACE WITH MONOCLE..SOCKS 2CEB0..2EBE0; PVALID # <CJK Ideograph Extension F>..<CJK Ideograph E


# Appendix E. Changes from Unicode 10.0.0 to Unicode 11.0.0 🦋

okay so Unicode got a little glow-up in version 11.0.0, and this section is basically the receipts 🧾💅 Here we go: first up, the characters that got *promoted* from `DISALLOWED` to `PVALID`. Iconic growth, honestly 🌸

Changes from derived property value `DISALLOWED` to `PVALID`.

111C9 ; PVALID # SHARADA SANDHI MARK


Next, the characters that were `UNASSIGNED` in the old version and got sorted into either `PVALID` or `DISALLOWED`. Lowkey the biggest batch of the whole appendix, so buckle up 🎢✨

Changes from derived property value `UNASSIGNED` to either `PVALID` or `DISALLOWED`.

0560 ; PVALID # ARMENIAN SMALL LETTER TURNED AYB 0588 ; PVALID # ARMENIAN SMALL LETTER YI WITH STROKE 05EF ; PVALID # HEBREW YOD TRIANGLE 07FD ; PVALID # NKO DANTAYALAN 07FE..07FF ; DISALLOWED # NKO DOROME SIGN..NKO TAMAN SIGN 08D3 ; PVALID # ARABIC SMALL LOW WAW 09FE ; PVALID # BENGALI SANDHI MARK 0A76 ; DISALLOWED # GURMUKHI ABBREVIATION SIGN 0C04 ; PVALID # TELUGU SIGN COMBINING ANUSVARA ABOVE 0C84 ; DISALLOWED # KANNADA SIGN SIDDHAM 1878 ; PVALID # MONGOLIAN LETTER CHA WITH TWO DOTS 1C90..1CBA ; DISALLOWED # GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN 1CBD..1CBF ; DISALLOWED # GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIA 2BBA..2BBC ; DISALLOWED # OVERLAPPING WHITE SQUARES..OVERLAPPING BLACK 2BD3..2BEB ; DISALLOWED # PLUTO FORM TWO..STAR WITH RIGHT HALF BLACK 2BF0..2BFE ; DISALLOWED # ERIS FORM ONE..REVERSED RIGHT ANGLE 2E4A..2E4E ; DISALLOWED # DOTTED SOLIDUS..PUNCTUS ELEVATUS MARK 312F ; PVALID # BOPOMOFO LETTER NN 9FEB..9FEF ; PVALID # <CJK Ideograph>..<CJK Ideograph> A7AF ; PVALID # LATIN LETTER SMALL CAPITAL Q A7B8 ; DISALLOWED # LATIN CAPITAL LETTER U WITH STROKE A7B9 ; PVALID # LATIN SMALL LETTER U WITH STROKE A8FE..A8FF ; PVALID # DEVANAGARI LETTER AY..DEVANAGARI VOWEL SIGN A 10A34..10A35; PVALID # KHAROSHTHI LETTER TTTA..KHAROSHTHI LETTER VHA 10A48 ; DISALLOWED # KHAROSHTHI FRACTION ONE HALF 10D00..10D27; PVALID # HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA SIG 10D30..10D39; PVALID # HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA D 10F00..10F1C; PVALID # OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER 10F1D..10F26; DISALLOWED # OLD SOGDIAN NUMBER ONE..OLD SOGDIAN FRACTION 10F27 ; PVALID # OLD SOGDIAN LIGATURE AYIN-DALETH 10F30..10F50; PVALID # SOGDIAN LETTER ALEPH..SOGDIAN COMBINING STROK 10F51..10F59; DISALLOWED # SOGDIAN NUMBER ONE..SOGDIAN PUNCTUATION HALF 110CD ; DISALLOWED # KAITHI NUMBER SIGN ABOVE 11144..11146; PVALID # CHAKMA LETTER LHAA..CHAKMA VOWEL SIGN EI 1133B ; PVALID # COMBINING BINDU BELOW 1145E ; PVALID # NEWA SANDHI MARK 1171A ; PVALID # AHOM LETTER ALTERNATE BA 11800..1183A; PVALID # DOGRA LETTER A..DOGRA SIGN NUKTA 1183B ; DISALLOWED # DOGRA ABBREVIATION SIGN 11A9D ; PVALID # SOYOMBO MARK PLUTA 11D60..11D65; PVALID # GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER 11D67..11D68; PVALID # GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER 11D6A..11D8E; PVALID # GUNJALA GONDI LETTER OO..GUNJALA GONDI VOWEL 11D90..11D91; PVALID # GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VO 11D93..11D98; PVALID # GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI OM 11DA0..11DA9; PVALID # GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT 11EE0..11EF6; PVALID # MAKASAR LETTER KA..MAKASAR VOWEL SIGN O 11EF7..11EF8; DISALLOWED # MAKASAR PASSIMBANG..MAKASAR END OF SECTION 16E40..16E5F; DISALLOWED # MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAP 16E60..16E7F; PVALID # MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL 16E80..16E9A; DISALLOWED # MEDEFAIDRIN DIGIT ZERO..MEDEFAIDRIN EXCLAMATI 187ED..187F1; PVALID # <Tangut Ideograph>..<Tangut Ideograph> 1D2E0..1D2F3; DISALLOWED # MAYAN NUMERAL ZERO..MAYAN NUMERAL NINETEEN 1D372..1D378; DISALLOWED # IDEOGRAPHIC TALLY MARK ONE..TALLY MARK FIVE 1EC71..1ECB4; DISALLOWED # INDIC SIYAQ NUMBER ONE..INDIC SIYAQ ALTERNATE 1F12F ; DISALLOWED # COPYLEFT SYMBOL 1F6F9 ; DISALLOWED # SKATEBOARD 1F7D5..1F7D8; DISALLOWED # CIRCLED TRIANGLE..NEGATIVE CIRCLED SQUARE 1F94D..1F94F; DISALLOWED # LACROSSE STICK AND BALL..FLYING DISC 1F96C..1F970; DISALLOWED # LEAFY GREEN..SMILING FACE WITH SMILING EYES A 1F973..1F976; DISALLOWED # FACE WITH PARTY HORN AND PARTY HAT..FREEZING 1F97A ; DISALLOWED # FACE WITH PLEADING EYES 1F97C..1F97F; DISALLOWED # LAB COAT..FLAT SHOE 1F998..1F9A2; DISALLOWED # KANGAROO..SWAN 1F9B0..1F9B9; DISALLOWED # EMOJI COMPONENT RED HAIR..SUPERVILLAIN 1F9C1..1F9C2; DISALLOWED # CUPCAKE..SALT SHAKER 1F9E7..1F9FF; DISALLOWED # RED GIFT ENVELOPE..NAZAR AMULET 1FA60..1FA6D; DISALLOWED # XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER


---

# Appendix F. Changes from Unicode 11.0.0 to Unicode 12.0.0 🌈

And we're on to the Unicode 12.0.0 drop, which is giving *more* characters, more scripts, and more emoji plot twists 🧚✨ Same deal as before: the next batch is all about things that were `UNASSIGNED` and are now either `PVALID` or `DISALLOWED`. Grab a snack, bestie 🍓

Changes from derived property value `UNASSIGNED` to either `PVALID` or `DISALLOWED`.

0C77 ; DISALLOWED # TELUGU SIGN SIDDHAM 0E86 ; PVALID # LAO LETTER PALI GHA 0E89 ; PVALID # LAO LETTER PALI CHA 0E8C ; PVALID # LAO LETTER PALI JHA 0E8E..0E93 ; PVALID # LAO LETTER PALI NYA..LAO LETTER PALI NNA 0E98 ; PVALID # LAO LETTER PALI DHA 0EA0 ; PVALID # LAO LETTER PALI BHA 0EA8..0EA9 ; PVALID # LAO LETTER SANSKRIT SHA..LAO LETTER SANSKRIT 0EAC ; PVALID # LAO LETTER PALI LLA 0EBA ; PVALID # LAO SIGN PALI VIRAMA 1CFA ; PVALID # VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA 2BC9 ; DISALLOWED # NEPTUNE FORM TWO 2BFF ; DISALLOWED # HELLSCHREIBER PAUSE SYMBOL 2E4F ; DISALLOWED # CORNISH VERSE DIVIDER A7BA ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL A A7BB ; PVALID # LATIN SMALL LETTER GLOTTAL A A7BC ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL I A7BD ; PVALID # LATIN SMALL LETTER GLOTTAL I A7BE ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL U A7BF ; PVALID # LATIN SMALL LETTER GLOTTAL U A7C2 ; DISALLOWED # LATIN CAPITAL LETTER ANGLICANA W A7C3 ; PVALID # LATIN SMALL LETTER ANGLICANA W A7C4..A7C6 ; DISALLOWED # LATIN CAPITAL LETTER C WITH PALATAL HOOK..LAT AB66..AB67 ; PVALID # LATIN SMALL LETTER DZ DIGRAPH WITH RETROFLEX 10FE0..10FF6; PVALID # ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN- 1145F ; PVALID # NEWA LETTER VEDIC ANUSVARA 116B8 ; PVALID # TAKRI LETTER ARCHAIC KHA 119A0..119A7; PVALID # NANDINAGARI LETTER A..NANDINAGARI LETTER VOCA 119AA..119D7; PVALID # NANDINAGARI LETTER E..NANDINAGARI VOWEL SIGN 119DA..119E1; PVALID # NANDINAGARI VOWEL SIGN E..NANDINAGARI SIGN AV 119E2 ; DISALLOWED # NANDINAGARI SIGN SIDDHAM 119E3..119E4; PVALID # NANDINAGARI HEADSTROKE..NANDINAGARI VOWEL SIG 11A84..11A85; PVALID # SOYOMBO SIGN JIHVAMULIYA..SOYOMBO SIGN UPADHM 11FC0..11FF1; DISALLOWED # TAMIL FRACTION ONE THREE-HUNDRED-AND-TWENTIET 11FFF ; DISALLOWED # TAMIL PUNCTUATION END OF TEXT 13430..13438; DISALLOWED # EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN 16F45..16F4A; PVALID # MIAO LETTER BRI..MIAO LETTER RTE 16F4F ; PVALID # MIAO SIGN CONSONANT MODIFIER BAR 16F7F..16F87; PVALID # MIAO VOWEL SIGN UOG..MIAO VOWEL SIGN UI 16FE2 ; DISALLOWED # OLD CHINESE HOOK MARK 16FE3 ; PVALID # OLD CHINESE ITERATION MARK 187F2..187F7; PVALID # <Tangut Ideograph>..<Tangut Ideograph> 1B150..1B152; PVALID # HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMA 1B164..1B167; PVALID # KATAKANA LETTER SMALL WI..KATAKANA LETTER SMA 1E100..1E12C; PVALID # NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PU 1E130..1E13D; PVALID # NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACH 1E140..1E149; PVALID # NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG P 1E14E ; PVALID # NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ 1E14F ; DISALLOWED # NYIAKENG PUACHUE HMONG CIRCLED CA 1E2C0..1E2F9; PVALID # WANCHO LETTER AA..WANCHO DIGIT NINE 1E2FF ; DISALLOWED # WANCHO NGUN SIGN 1E94B ; PVALID # ADLAM NASALIZATION MARK 1ED01..1ED3D; DISALLOWED # OTTOMAN SIYAQ NUMBER ONE..OTTOMAN SIYAQ FRACT 1F16C ; DISALLOWED # RAISED MR SIGN 1F6D5 ; DISALLOWED # HINDU TEMPLE 1F6FA ; DISALLOWED # AUTO RICKSHAW 1F7E0..1F7EB; DISALLOWED # LARGE ORANGE CIRCLE..LARGE BROWN SQUARE 1F90D..1F90F; DISALLOWED # WHITE HEART..PINCHING HAND 1F93F ; DISALLOWED # DIVING MASK 1F971 ; DISALLOWED # YAWNING FACE 1F97B ; DISALLOWED # SARI 1F9A5..1F9AA; DISALLOWED # SLOTH..OYSTER 1F9AE..1F9AF; DISALLOWED # GUIDE DOG..PROBING CANE 1F9BA..1F9BF; DISALLOWED # SAFETY VEST..MECHANICAL LEG 1F9C3..1F9CA; DISALLOWED # BEVERAGE BOX..ICE CUBE 1F9CD..1F9CF; DISALLOWED # STANDING PERSON..DEAF PERSON 1FA00..1FA53; DISALLOWED # NEUTRAL CHESS KING..BLACK CHESS KNIGHT-BISHOP 1FA70..1FA73; DISALLOWED # BALLET SHOES..SHORTS 1FA78..1FA7A; DISALLOWED # DROP OF BLOOD..STETHOSCOPE 1FA80..1FA82; DISALLOWED # YO-YO..PARACHUTE 1FA90..1FA95; DISALLOWED # RINGED PLANET..BANJO


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# Acknowledgments ✨

<pink>Thanks!!</pink> 🫶 Huge shoutout to Harald Alvestrand, Marc Blanchet, Martin Dürst, Asmus Freytag, Ted Hardie, John Klensin, Erik Nordmark, Pete Resnick, Peter Saint-Andre, Michel Suignard, Andrew Sullivan, and Suzanne Woolf for their input to this document. The real MVPs 👑💜

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# Author's Address 🎀

Patrik Fältström
Netnod
Email: paf@netnod.se
📦 where this page comes from