LEI Validator
Validate 20-character Legal Entity Identifiers (ISO 17442). Verify format, LOU prefix, and MOD 97-10 check digits.
Enter an LEI above to validate
We'll verify format, length, LOU prefix, and check digits
What we check
Format Check
Validating alphanumeric character set
Length Verification
Checking for exactly 20 characters
LOU Prefix & Structure
Verifying LOU ID prefix and check digit range (02-98)
MOD 97-10 Verification
Validating check digits using ISO 7064 MOD 97-10
Learn More
Learn what LEIs are, how the ISO 17442 format works, and how to validate Legal Entity Identifiers.
What Is a Legal Entity Identifier?
A Legal Entity Identifier (LEI) is a 20-character alphanumeric code that uniquely identifies legal entities participating in financial transactions worldwide. Introduced after the 2008 financial crisis, the LEI system provides transparency by making it possible to identify every party in a financial transaction.