The Association of National Numbering Agencies

The Association of National Numbering Agencies (ANNA) is a global member association of National Numbering Agencies (NNAs), seeking to foster standardisation within the financial industry by upholding the International Organization for Standardization (ISO) principles, and by promoting International Securities Identification Numbers (ISIN), Financial Instrument Short Name (FISN), and Classification of Financial Instruments (CFI) codes for financial instruments.

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International Securities Identification Number (ISIN) - ISO 6166

The ISIN is the core identifier of securities transactions and settlement.

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Financial Instrument Short Name (FISN) - ISO 18774

The FISN standard incorporates the issuer short name and the abbreviated characteristics for the financial instrument.

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Classification of Financial Instruments (CFI) - ISO 10962

For each ISIN, the CFI is a detailed description of the type of instrument.

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Legal Entity Identifier (LEI) - ISO 17442

ANNA and GLEIF launched an initiative to link ISINs and LEIs to improve transparency of exposure by linking the issuer and issuance of securities.

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News

ANNA newsletter

ANNA Newsletter December 2025

18/12/2025

Dear Reader, Having been re-elected to the board in June, it's been a pleasure to…

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Current Compliance Challenges in Crypto Assets for Market Participants

17/12/2025

Stephan Dreyer, Managing Director at Association of National Numbering Agencies (ANNA), a sponsor at the 26…

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ANNA Extraordinary General Meeting 2025, Muscat, Oman

15/12/2025

We are pleased to share images from our Extraordinary General Meeting hosted by Muscat Clearing…

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The Association of National Numbering Agencies (ANNA) Extraordinary General Meeting in Oman highlights Middle Eastern Capital Market Growth, Expansion in Global Membership and an Increase in Partnership Applications

05/12/2025

Confirmed at ANNA’s General Meeting, Muscat, 3rd & 4th December 2025 London, 5 December 2025…

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The Association of National Numbering Agencies (ANNA) and Digital Token Identifier Foundation (DTIF) win ‘Best Data Solution for Digital Assets’ at the Data Management Insight Awards Europe 2025

04/12/2025

London, 4 December 2025 – We are pleased to announce that the Association of National…

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Tokenization: What’s Working (and What Isn’t) for Institutions

14/11/2025

From experimentation to execution, institutional tokenisation is gaining real momentum. At the European Blockchain Convention…

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The Association of National Numbering Agencies (ANNA) is a global organisation whose members & partners are responsible for assigning ISIN, FISN & CFI codes.

ANNA_ISIN
anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
21 Jul

🏆Delighted to be recognised as Best Reference Data Provider at the @WatersTech Rankings Awards 2025!

This award highlights the ASB’s work delivering the world’s only directly sourced ISIN data to support market participants globally.

🔗 Read more: https://anna-web.org/the-association-of-national-numbering-agencies-anna-wins-best-reference-data-provider-at-the-waterstechnology-rankings-awards-2025/

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anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
16 Jul

Looking for the #ISIN for Uniswap, Inter-American, USDCV, and bonds from Nomura Research Institute (NRI), City of Lugano and Six Group?

🌐🔒We now have 2.173 ISIN:DTI mappings available.
Check out the most recent ISINs for crypto assets here:
https://anna-web.org/digital-assets

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anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
15 Jul

🗣️Our MD @StephanDreyer5 will be speaking at the 19th International Financial Standards Conference #IFSC25 on 12 November in Frankfurt.

He will be on a panel on ‘Adapting Standards for the Digital Assets Ecosystem’.

Find out more and register here: https://www.wmdatenservice.com/en/ifsc-2025/

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