DUNS Number

Summary

Nine-digit identifier issued by Dun & Bradstreet. Formerly the primary U.S. federal entity identifier; retained for historical matching.

Code

org:xi:duns

Applies to

Organization

Kind

commercial

Status

Base identifier

Issuer

Dun & Bradstreet

org-id.guide

XI-DUNS

Code structure

The registry code is a three-part <schema>:<scope>:<prop>string that doubles as the map key in an identifier collection.

Schema

org

Scope

xi

Property

duns

Identifier format

Pattern^\d{9}$

Example123456789

Presentation & validation

• Strip hyphens and spaces before storing.

Lookup & source

Source: https://org-id.guide/list/XI-DUNS

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