What is a valid D-U-N-S Number?

The Data Universal Numbering System (D-U-N-S) is a proprietary 9-digit corporate identification number issued by Dun & Bradstreet (D&B). It is widely used as a standard business identifier.

How is the DUNS number structure validated?

A valid DUNS number consists of exactly 9 digits, typically formatted as XX-XXX-XXXX, and does not contain alphabetic characters.

DUNS Number Format Validator & Search

Verify entity identifier formats, structure, and check digits. Run offline checksum algorithms and query active registration details.

D-U-N-S Number Validator

Data Universal Numbering System (D-U-N-S) is a proprietary 9-digit corporate identification format created by Dun & Bradstreet.

Enter 9-digit DUNS number:

DUNS Number Format Validator & Search

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