DUNS Number Format Validator & Search
The D-U-N-S Number is a proprietary 9-digit corporate identification number issued by Dun & Bradstreet, serving as a global standard for business credit reporting.
Validate entity-identifier format, structure, and check digits offline. For LEI codes, also query live status in the official GLEIF registry.
D-U-N-S Number Format Validator
Checks format & structure only (9 numeric digits). This tool does not check active credit records; to search Dun & Bradstreet corporate records, visit Dun & Bradstreet (D&B).
Frequently Asked Questions
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).
How is the DUNS number structure validated?
A valid DUNS number consists of exactly 9 numeric digits, typically formatted as XX-XXX-XXXX, and does not contain alphabetic characters.