✅Quick Spot-Checks
Instantly confirm an LEI you've come across in documents, emails, or transaction records.
LEI Format Validator
Verify if an LEI conforms to the ISO 17442 standard and check if it exists in the global LEI database
Validate Legal Entity Identifier
Enter an LEI code to validate its format according to ISO 17442 standard and check if it exists in the global LEI database.
0/20
Enter a 20-character Legal Entity Identifier
How This LEI Validator Works
To check the validity of a Legal Entity Identifier (LEI), enter the full 20-character code into the input field. The tool runs two key checks:
- Format Validation
- First, the validator checks that the LEI meets ISO 17442 standards. This includes confirming it has exactly 20 uppercase alphanumeric characters and that the final two digits (check digits) are mathematically correct.
- Global LEI Registry Lookup
- If the format is valid, the tool searches the Global LEI Index, maintained by GLEIF. This step verifies whether the LEI is active and pulls in key reference data—such as the legal name, country, and status of the associated entity.
Once complete, the tool clearly shows:
- Whether the LEI is valid and registered
- If the structure is correct but no record exists
- Or if the code is structurally invalid
For valid records, the validator also displays a breakdown of the LEI and a link to the full entry in the official registry.
When to Use This Single LEI Validator
This tool is ideal when you need to quickly check one LEI at a time. It's useful for:
✅Pre-Submission Checks
Double-check an LEI before entering it into regulatory filings, contracts, or internal systems to avoid downstream errors.
✅Troubleshooting
If an LEI is causing data issues, use this tool to check its status and ensure it's valid in the global registry.
✅Team Training or Learning
Great for introducing new team members to the LEI structure and showing what kind of data an LEI links to.
✅Counterparty Verification
When a client or supplier provides their LEI, you can quickly confirm that it's correct and active.
About LEI Format
A Legal Entity Identifier (LEI) is a 20-character, alpha-numeric code that connects to key reference information that enables clear and unique identification of legal entities participating in financial transactions.
The LEI format follows ISO 17442 standard:
- Characters 1-18: Entity-specific alphanumeric characters (uppercase letters or numbers)
- Characters 19-20: ISO 7064 (MOD 97-10) check digits
For a comprehensive overview of Legal Entity Identifiers, their history, and regulatory importance, you can refer to the Wikipedia article on LEIs.