# D-U-N-S Number

Dun & Bradstreet 9-digit identifier for legal entities, common in international procurement and ISO 6523 ICD 0060.

## Definition

Dun & Bradstreet 9-digit identifier for legal entities, common in international procurement and ISO 6523 ICD 0060.

## Explanation

Required by some US federal procurement and many enterprise vendor-onboarding systems; available free of charge on request from D&B.

In Peppol, D-U-N-S is referenced via EAS scheme 0060 but is less common in EU public-sector flows than VAT-ID or GLN.

## Related resources

- [Code lists](/resources/code-lists)

## Related terms

- [ISO 6523](/resources/glossary/iso-6523): International standard that registers identifier schemes for organisations — the foundation of the EAS code list.
- [EAS (Electronic Address Scheme)](/resources/glossary/eas): EN 16931 code list (CEF EAS) that says which identifier scheme — VAT-ID, GLN, OIN, etc. — is used for an electronic address.
- [Participant ID](/resources/glossary/participant-id): Identifier used in PEPPOL to address a sender/receiver (e.g., with a scheme).