About a-team Marketing Services
The knowledge platform for the financial technology industry
The knowledge platform for the financial technology industry

A-Team Insight Blogs

ANNA Implementation of Revised ISO 6166 ISIN Standard Spotlights LEI, CFI and FISN

Subscribe to our newsletter

The Association of National Numbering Agencies (ANNA) has completed technical implementation of the revised ISO 6166 International Securities Identification Number (ISIN) with a view to bringing further clarity and transparency to the identification and reporting of financial instruments.

Following implementation of the technical changes, National Numbering Agencies (NNAs) within ANNA must formally report Legal Entity Identifiers (LEIs), Classification of Instruments (CFIs), and Financial Instrument Short Names (FISNs) to the ANNA Service Bureau (ASB), increasing data coverage and quality.

For the first time, the revised ISO 6166 standard includes assignment rules for tokenised financial and referential instruments, adding to OTC derivatives already implemented by the Derivatives Service Bureau (DSB). Emission allowances, carbon credits and baskets are also confirmed as instruments within the scope of ISIN assignment. The revised ISIN standard is available to users on the free ISIN Lookup Service and to subscribers of ASB services.

Emma Kalliomaki, managing director of ANNA, says the ISIN revisions have improved clarity of terms, scope and coverage of the standard, which will further enhance usability, increase transparency and aid risk and exposure management. She adds: “The complementary nature of the standards has been confirmed, with the LEI, CFI, FISN and ISIN all working together to bring identification, description and classification in one suite of ISO standards.”

The revised ISO 6166 standard was published in February 2021, following a systematic review by the International Organisation for Standardisation (ISO). Revisions include a wider data set going from 43 to 49 fields. The implementation timeline was based on changes needed to the ASB, as well as an appropriate timeframe for NNAs to update their internal systems to contribute additional data to the ASB.

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Unlocking Transparency in Private Markets: Data-Driven Strategies in Asset Management

As asset managers continue to increase their allocations in private assets, the demand for greater transparency, risk oversight, and operational efficiency is growing rapidly. Managing private markets data presents its own set of unique challenges due to a lack of transparency, disparate sources and lack of standardization. Without reliable access, your firm may face inefficiencies,...

BLOG

Reconciliation and the Silent Revolution Reshaping Financial Operations

By Sarva Srinivasan, head of global strategy and managing director at NeoXam, Americas. In most financial institutions, reconciliation has traditionally lived quietly in the background. It is often viewed as a necessary control process that ensures transactions, positions and balances match across systems and counterparties. Important, yes, but rarely considered fundamental to the business. But...

EVENT

ExchangeTech Summit London

A-Team Group, organisers of the TradingTech Summits, are pleased to announce the inaugural ExchangeTech Summit London on May 14th 2026. This dedicated forum brings together operators of exchanges, alternative execution venues and digital asset platforms with the ecosystem of vendors driving the future of matching engines, surveillance and market access.

GUIDE

RegTech Suppliers Guide 2019

Welcome to our brand new RegTech Suppliers Guide. This unique guide provides detailed data profiles on close to 100 suppliers in the RegTech world, offering you an unrivalled selection of solutions for your most pressing financial regulatory challenges. The aim of the A-Team’s RegTech Suppliers Guide is to steer you through this complex marketplace, offering...