[urn] Re: [Uri-review] Re: Re: [EXTERNAL] Re: Request to register the glue URI scheme

[Brent Zundel <[e-mail]>]

In response to those who suggest that it is practical to contact each
business Identifier authority and persuade them each to register their own
URN scheme, I present the following data set.

Business Identifier Authorities

#

Authority

Area where it operates

Identifier(s) / description link

1

Global Legal Entity Identifier Foundation (GLEIF)

Global

Legal Entity Identifier (LEI), a 20-character code for legal entities. (Home
– GLEIF
<https://www.gleif.org/en/about-lei/introducing-the-legal-entity-identifier-lei?utm_source=chatgpt.com>
)

2

GS1

Global

Global Location Number (GLN) for legal entities, functions,
physical/digital locations. (GS1
<https://www.gs1.org/standards/id-keys/gln/legal-entity?utm_source=chatgpt.com>
)

3

Dun & Bradstreet

Global

D-U-N-S Number, a unique nine-digit business identifier. (Dun & Bradstreet
<https://www.dnb.com/en-us/smb/duns/get-a-duns.html?utm_source=chatgpt.com>)

4

Internal Revenue Service (IRS)

United States

Employer Identification Number (EIN). (IRS
<https://www.irs.gov/businesses/employer-identification-number?utm_source=chatgpt.com>
)

5

U.S. Securities and Exchange Commission (SEC)

United States

Central Index Key (CIK) assigned to SEC filing entities and individuals. (
SEC
<https://www.sec.gov/submit-filings/filer-support-resources/how-do-i-guides/look-central-index-key-cik-number?utm_source=chatgpt.com>
)

6

SAM.gov / U.S. General Services Administration

United States federal procurement

Unique Entity ID, a 12-character identifier for entities doing business
with the U.S. government. (SAM.gov
<https://sam.gov/content/status-tracker?utm_source=chatgpt.com>)

7

Delaware Division of Corporations

Delaware, United States

Delaware entity file number / business entity registration records. (Division
of Corporations
<https://icis.corp.delaware.gov/ecorp/entitysearch/namesearch.aspx?utm_source=chatgpt.com>
)

8

California Secretary of State

California, United States

California entity number / business entity ID assigned at
registration. (California
Secretary of State
<https://www.sos.ca.gov/business-programs/business-entities/cbs-field-status-definitions?utm_source=chatgpt.com>
)

9

Canada Revenue Agency (CRA)

Canada

Business Number (BN), a unique nine-digit business identifier. (Canada
<https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/business-registration/business-number-program-account.html?utm_source=chatgpt.com>
)

10

Registraire des entreprises du Québec

Québec, Canada

Québec Enterprise Number (NEQ). (Gouvernement du Québec
<https://www.quebec.ca/en/businesses-and-self-employed-workers/start-entreprise/register-constitute-enterprise/learn-about-registration/quebec-enterprise-number-neq?utm_source=chatgpt.com>
)

11

Ontario Business Registry / ServiceOntario

Ontario, Canada

Ontario Business Identification Number (BIN). (ontario.ca
<https://www.ontario.ca/page/business/start/register-your-business-online?utm_source=chatgpt.com>
)

12

Servicio de Administración Tributaria (SAT)

Mexico

Registro Federal de Contribuyentes (RFC) for legal persons. (SAT
<https://www.sat.gob.mx/portal/public/tramites/inscripcion-al-rfc-pm?utm_source=chatgpt.com>
)

13

Receita Federal do Brasil

Brazil

Cadastro Nacional da Pessoa Jurídica (CNPJ). (Serviços e Informações do
Brasil
<https://www.gov.br/pt-br/servicos/inscrever-ou-atualizar-cadastro-nacional-de-pessoas-juridicas?utm_source=chatgpt.com>
)

14

ARCA / AFIP

Argentina

Clave Única de Identificación Tributaria (CUIT). (AFIP
<https://www.afip.gob.ar/inscripcion/cuit-cdi/solicitud-cuit.asp?utm_source=chatgpt.com>
)

15

Servicio de Impuestos Internos (SII)

Chile

Rol Único Tributario (RUT). (SII
<https://www.sii.cl/contribuyentes/contribuyentes_individuales/chilenos_extranjero/rol_unico_tributario.htm?utm_source=chatgpt.com>
)

16

SUNAT

Peru

Registro Único de Contribuyentes (RUC), an 11-digit taxpayer identifier. (Renta
2019
<https://emprender.sunat.gob.pe/ruc/mi-ruc/inscripcion-ruc?utm_source=chatgpt.com>
)

17

DIAN

Colombia

Registro Único Tributario (RUT) / Número de Identificación Tributaria
(NIT). (DIAN
<https://www.dian.gov.co/impuestos/RUT/Paginas/Consultas-RUT.aspx?utm_source=chatgpt.com>
)

18

Servicio de Rentas Internas (SRI)

Ecuador

Registro Único de Contribuyentes (RUC). (Sri Ecuador
<https://www.sri.gob.ec/ruc-personas-naturales?utm_source=chatgpt.com>)

19

Dirección Nacional de Ingresos Tributarios (DNIT/SET)

Paraguay

Registro Único de Contribuyentes (RUC). (set.gov.py
<https://www.set.gov.py/web/portal-institucional/registro-%C3%BAnico-de-contribuyentes-ruc-?utm_source=chatgpt.com>
)

20

Dirección General de Impuestos Internos (DGII)

Dominican Republic

Registro Nacional de Contribuyentes (RNC). (DGII
<https://dgii.gov.do/cicloContribuyente/registroRNC/Paginas/default.aspx?utm_source=chatgpt.com>
)

21

Superintendencia de Administración Tributaria (SAT)

Guatemala

Número de Identificación Tributaria (NIT). (Portal SAT
<https://portal.sat.gob.gt/portal/solicitud-electronica-de-nit/?utm_source=chatgpt.com>
)

22

Companies House

United Kingdom

Company number / Companies House registration number. (Find and Update
Company Information
<https://find-and-update.company-information.service.gov.uk/company-lookup/search?forward=%2Fauth-code-requests%2Fcompany%2F%7BcompanyNumber%7D%2Fconfirm&utm_source=chatgpt.com>
)

23

INSEE

France

SIREN and SIRET identifiers for entities and establishments. (Insee
<https://www.insee.fr/en/metadonnees/source/serie/s1020?utm_source=chatgpt.com>
)

24

Kamer van Koophandel (KVK)

Netherlands

KVK number in the Dutch Business Register. (KVK
<https://www.kvk.nl/en/search/?utm_source=chatgpt.com>)

25

FPS Economy / Crossroads Bank for Enterprises (CBE/KBO)

Belgium

Enterprise number and establishment-unit number. (FPS Economy
<https://economie.fgov.be/en/themes/enterprises/crossroads-bank-enterprises/registration-crossroads-bank?utm_source=chatgpt.com>
)

26

Danish Business Authority / Central Business Register (CVR)

Denmark

CVR number. (businessindenmark.virk.dk
<https://businessindenmark.virk.dk/authorities/stat/ERST/self-service/Start_company/?utm_source=chatgpt.com>
)

27

Brønnøysund Register Centre

Norway

Organisation number for legal persons. (Brønnøysundregistrene
<https://www.brreg.no/en/about-us-2/our-registers/about-the-central-coordinating-register-for-legal-entities-ccr/about-the-organisation-number/?utm_source=chatgpt.com>
)

28

Bolagsverket

Sweden

Organisationsnummer for companies and associations. (bolagsverket.se
<https://bolagsverket.se/foretag/organisationsnummer.1207.html?utm_source=chatgpt.com>
)

29

Finnish Business Information System (PRH + Tax Administration)

Finland

Business ID / Y-tunnus. (YTJ
<https://www.ytj.fi/en/index/businessid.html?utm_source=chatgpt.com>)

30

e-Business Register

Estonia

Registry code for legal entities. (e-Äriregister
<https://ariregister.rik.ee/eng?utm_source=chatgpt.com>)

31

Centre of Registers

Lithuania

Legal entity code in the Register of Legal Entities. (Registrų Centras
<https://www.registrucentras.lt/jar/p_en/?utm_source=chatgpt.com>)

32

Companies Registration Office (CRO)

Ireland

CRO register number. (CRO
<https://cro.ie/services-and-help/using-services/?utm_source=chatgpt.com>)

33

Unternehmensregister / Handelsregister

Germany

Company-register records and register numbers. (Unternehmensregister
<https://www.unternehmensregister.de/de/howto/search?language=en&submitaction=language&utm_source=chatgpt.com>
)

34

Firmenbuch

Austria

Firmenbuchnummer / company register number. (Business Service Portal
<https://www.usp.gv.at/themen/betrieb-und-umwelt/laufender-betrieb/firmenbuch.html?utm_source=chatgpt.com>
)

35

Swiss Federal Statistical Office (FSO) / UID Register

Switzerland

UID, formatted as CHE plus nine digits. (Federal Office of Civil Aviation
<https://www.bfs.admin.ch/bfs/en/home/registers/enterprise-register/enterprise-identification/uid-general.html?utm_source=chatgpt.com>
)

36

Registro Imprese / Italian Chambers of Commerce

Italy

Codice fiscale, Partita IVA, and REA number in business-register records. (
registroimprese
<https://www.registroimprese.it/codice-fiscale-p.iva-rea?utm_source=chatgpt.com>
)

37

Agencia Tributaria

Spain

Número de Identificación Fiscal (NIF) for legal persons and entities. (Agencia
Tributaria
<https://sede.agenciatributaria.gob.es/Sede/en_gb/censos-nif-domicilio-fiscal/solicitar-nif/nif-persona-juridica-entidad.html?utm_source=chatgpt.com>
)

38

IRN / Registo Nacional de Pessoas Coletivas (RNPC)

Portugal

NIPC, the legal-person identification number. (IRN
<https://irn.justica.gov.pt/Servicos/Empresas-e-outras-pessoas-coletivas/Registo-Nacional-de-Pessoas-Coletivas?utm_source=chatgpt.com>
)

39

Ministry of Justice / National Court Register (KRS)

Poland

KRS number for registered entities. (Ekrs
<https://ekrs.ms.gov.pl/?utm_source=chatgpt.com>)

40

ARES / Czech public administration

Czechia

IČO, the Czech organization identification number. (ARES
<https://ares.gov.cz/otevrena-data/?utm_source=chatgpt.com>)

41

Statistical Office / Business Register

Slovakia

IČO, the organization identification number. (Slovak Statistics
<https://slovak.statistics.sk/wps/portal/ext/services/services.ico/%21ut/p/z0/04_Sj9CPykssy0xPLMnMz0vMAfIjo8ziw3wCLJycDB0N3M1DDA08_fyCQ8MsAo093Mz0g1Pz9AuyHRUBcQFCAQ%21%21/?utm_source=chatgpt.com>
)

42

National Trade Register Office (ONRC)

Romania

Trade-register order number and unique registration code. (Onrc
<https://www.onrc.ro/index.php/en/informatii-2/informatii-rc?utm_source=chatgpt.com>
)

43

AJPES

Slovenia

Registration number for each business entity in the Slovenian Business
Register. (AJPES
<https://www.ajpes.si/About_AJPES/Tasks?utm_source=chatgpt.com>)

44

Australian Business Register (ABR)

Australia

Australian Business Number (ABN), an 11-digit identifier. (Australian
Business Register
<https://www.abr.gov.au/business-super-funds-charities/applying-abn?utm_source=chatgpt.com>
)

45

Australian Securities & Investments Commission (ASIC)

Australia

Australian Company Number (ACN), a unique nine-digit company identifier. (
ASIC
<https://www.asic.gov.au/for-business-and-companies/companies/register-a-company/australian-company-number-acn/?utm_source=chatgpt.com>
)

46

New Zealand Business Number Register

New Zealand

NZBN, a globally unique identifier for New Zealand businesses. (New Zealand
Business Number <https://www.nzbn.govt.nz/?utm_source=chatgpt.com>)

47

Accounting and Corporate Regulatory Authority (ACRA)

Singapore

Unique Entity Number (UEN). (ACRA
<https://www.acra.gov.sg/register/business/registering-different-business-structures/local-company/registering-via-bizfile/?utm_source=chatgpt.com>
)

48

Companies Registry / Inland Revenue Department

Hong Kong

Business Registration Number (BRN) as the Unique Business Identifier.
(Companies
Registry
<https://www.cr.gov.hk/en/electronic/e-servicesportal/e-search.htm?utm_source=chatgpt.com>
)

49

National Tax Agency

Japan

Corporate Number, a 13-digit identifier. (National Tax Agency Business
Number
<https://www.houjin-bangou.nta.go.jp/en/setsumei/?utm_source=chatgpt.com>)

50

Ministry of Corporate Affairs (MCA)

India

Corporate Identity Number (CIN). (Ministry of Corporate Affairs
<https://www.mca.gov.in/content/mca/global/en/mca/fo-llp-services/findCinFinalSingleCom.html?utm_source=chatgpt.com>
)

51

Goods and Services Tax Network / GST Portal

India

GSTIN / UIN for GST-registered entities. (GST Services
<https://services.gst.gov.in/services/quicklinks/searchtxp?utm_source=chatgpt.com>
)

52

Suruhanjaya Syarikat Malaysia (SSM)

Malaysia

Company, business, and LLP registration numbers. (SSM
<https://www.ssm.com.my/Pages/e-Search.aspx?utm_source=chatgpt.com>)

53

Online Single Submission (OSS)

Indonesia

Nomor Induk Berusaha (NIB), the Business Identification Number. (OSS RBA
<https://oss.go.id/en?utm_source=chatgpt.com>)

54

Ministry of Commerce

Saudi Arabia

Commercial Registration number / commercial-registration records. (Ministry
of Commerce
<https://mc.gov.sa/en/eservices/Pages/ServiceDetails.aspx?sID=38&utm_source=chatgpt.com>
)

55

Companies and Intellectual Property Commission (CIPC)

South Africa

Company registration number. (CIPC
<https://www.cipc.co.za/?utm_source=chatgpt.com>)

56

Corporate Affairs Commission (CAC)

Nigeria

RC number / company registration records. (Corporate Affairs Commission
<https://www.cac.gov.ng/services/company-search?utm_source=chatgpt.com>)

57

Kenya Revenue Authority (KRA)

Kenya

Personal Identification Number (PIN) for businesses and other
organizations. (Kenya Revenue Authority
<https://www.kra.go.ke/individual/individual-pin-registration/learn-about-pin/about-pin?utm_source=chatgpt.com>
)

58

Ghana Revenue Authority (GRA)

Ghana

Taxpayer Identification Number (TIN) for organizations. (Ghana Revenue
Authority
<https://gra.gov.gh/online-tools/verify-tin/?utm_source=chatgpt.com>)

59

Corporate and Business Registration Department

Mauritius

Business Registration Number (BRN). (Companies Mauritius
<https://companies.govmu.org/cbrd/wp-content/uploads/2025/10/BusinessRegistrationAct2002.pdf?utm_source=chatgpt.com>
)

60

Direction Générale des Impôts / business identifier services

Morocco

ICE, IF, and RC business identifiers. (Tax Administration Morocco
<https://www.tax.gov.ma/wps/portal/m.dgi.ma/Mobile/Accueil/VosTeleservices/recherche%20entreprise/recherche%20%20entreprise/%21ut/p/z1/rVLLboMwEPyV9JCjtQ5QAkfCoc2rh7Y04EvFYwG3YIixSPv3NcqFQwOqVEuW7NHsY3YHGITARNzzIla8EXGl_xGz323X81fmnh5osDep5662u4fD02ZjUzhNEnwT2HT8GzBgqVCtKiGqm4RXSLKCL-n1vaR90y0UVtih7HmK3ZJKTEuU-i5QKImt5B2O0RE8JG9TnkFkoWM4lpkTwzYzYhkxksRxXWKklmXRxF4n-Xpgd2pGku55kERvHG9uJFtjbiTX-IkCs_FskjJ0MKdhOoNea6SbXN8kBPdw6jleIBCNrLWPXv64iUcKuzmd2pv843xmnjZQIxR-KQj_30G6iiGP_rHQ_ceqJFzkDYS_ZRijY7itg9oxxTfn5PPZubzmZdUfPO_uB-JqEnk%21/dz/d5/L2dBISEvZ0FBIS9nQSEh/?utm_source=chatgpt.com>
)

These are not all the same kind of identifier: some are tax IDs, some are
company-register numbers, some are procurement IDs, and some are global
standards/private-sector identifiers. But each row is a real authority or
issuer with a public identifier description or lookup/registration page.




On Thu, Jul 9, 2026, 10:13 AM Dale R. Worley <[e-mail]> wrote:

> I'm not a URI reviewer but I ran into a half-baked idea that is somewhat
> aligned with the concept of GLUE.  Let me propose it to get some
> feedback.
>
> What is needed is a way to record inexact, non-authoritative, indicative
> identifiers.  These identifiers, being inexact, generally aren't used
> for routine data processing, but rather in exceptional situations where
> a human wants to investigate the supply chain of a group of things.
>
> There's a requirement that the URI can be put into a data field that
> "expects a URI", so it has to not be confusable with defined identifier
> schemes.
>
> It seems to me that this can be solved by the "data" URI scheme, which
> is designed to carry arbitrary (short) strings.  In its simplest usage,
> we can carry the identifier "ship 27" by
>
>     data:,ship%2027
>
> (The comma is mandatory.)
>
> Various extensions can handle non-ASCII character sets.  And as you can
> see, if there was a URN available for the data field, it can be used
> unambiguously instead of the data: URI.
>
> I can easily envision that informal conventions would arise, such as
> starting the string with a prefix like "foobar:" to indicate that the
> remainder of the string was a "foobar" identifier.
>
> In use, currently these identifiers would be read and interpreted by a
> human, within the context of much more information about the product
> that it is associated with.  But I can envision that in the future, an
> AI system could do a decent job of doing such interpretation.
>
> Dale
>