Duns 4 LEI

This ensures you are compliant with MIFID II regulations by updating your LEI database. Identify your counterparts accurately thanks to exclusive matching using the

What is the LEI?

What is the D-U-N-S Number©?

The Legal Entity Identifier or LEI, is a unique 20-character reference that any legal entity wishing to invest or carry out a financial transaction on regulated markets (energy, grain, financial markets…) must possess. The LEI was born in 2011 under the impetus of the G20 to meet the need for an industry standard to identify the counterparties of a transaction. In France, the Ministry of Economy and Finance has empowered INSEE as LOU (Local Operating Units) allowing it to assign pre-LEI to entities under French law. The LEI is granted on the basis of the SIREN according to a rate set by the order of the Minister of Economy and Finance of June 28, 2013 and is valid for 1 year.

The D-U-N-S Number © (or Data Universal Numbering System number) is a unique 9-digit company identifier issued by our exclusive partner Dun & Bradstreet. It is most often used to establish a risk score to allow business partners or lending institutions to verify the reliability of a company.

It also keeps information on more than 310 million companies around the world up to date on a daily basis. This unique identifier is the pivotal data for implementing Altares D&B repositories, and allows us to enrich your LEI portfolio.


companies across the world


LEIs collected


UBOs across the world


legal entities with the D-U-N-S Number

With DUNS 4 LEI save time and benefit from an up-to-date database according to the latest LEI standards

Duns 4 LEI automates and maintains the LEI of your third party databases


Matching legal entities via the Duns Number©


Using Altares – Dun & Bradstreet data and expertise, we match each LEI in your file to its corresponding D-U-N-S Number.


We clean and enrich your LEI file with the different attributes: identity, LOU (Legal Operating Units), renewal date, etc., to provide you with quality information.


A regular update is performed (removal of erroneous or inactive LEIs). With DUNS 4 LEI you save time and no longer need to match or update your file manually.

Trust in Altares - Dun & Bradstreet’s expertise

With DUNS 4 LEI save time and benefit from an up-to-date database according to the latest LEI standards


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