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

The Association of National Numbering Agency (ANNA) wins ‘Best Reference Data Provider’ at the Waters Technology Inside Market Data and Inside Reference Data awards 2025

06/06/2025

London, 6 June 2025: We are delighted to announce that the Association of National Numbering…

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Stephan Dreyer Moderates at the A-Team Webinar – Video

05/06/2025

Stephan Dreyer moderates at the A-Team Insight, from A-Team Group webinar on the 3rd June…

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Innovating Through Regulation: The Commercial Path to Compliance – Digital Assets Week New York May 2025

04/06/2025

Stephan Dreyer joined the panel at the Digital Asset Week in New York from the…

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Happy International Women’s Day!

07/03/2025

This year’s theme, ‘Accelerate Action’, is a bold call to drive active momentum toward gender…

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GDF 2024 Annual Report - ANNADTIF

ANNA and DTIF Insights in the GDF 2024 Annual Report

10/02/2025

See insights from ANNA and DTIF in the GDF 2024 Annual Report here

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ANNA newsletter

ANNA Newsletter January, 2025

30/01/2025

Dear Reader, In this editorial, I am proud to reflect on the achievements of the…

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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.

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anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
12 Jun

We are pleased to announce that ANNA will be presenting the 19th International Financial Standards Conference #IFSC25 with WM Datenservice on 12 November in Frankfurt.

To find out more about the event and registrations click here: https://www.wmdatenservice.com/en/ifsc-2025/

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anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
10 Jun

🏆 ICYMI we are so proud to share the @WatersTech summary of why ANNA took top spot again as ‘Best Data Reference Data Provider’ 2025 at the Inside Market Date and Inside Reference Data Awards 2025!

Read the full article here: https://www.waterstechnology.com/awards-rankings/7952474/best-reference-data-provider%E2%80%94anna

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anna_isin Association of National Numbering Agencies (ANNA) @anna_isin ·
6 Jun

Our MD @StephanDreyer5 took part in a panel discussion at the #DAWeek in NY about "Innovating Through Regulation: The Commercial Path to Compliance" with @SDNYnews @PanteraCapital @JonesDay.

🎥 The panel recording is now available. Watch here:

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