Free tool
LEI Search
Type a Legal Entity Identifier and the check reports whether it is twenty characters with valid check digits. This is a check of the number, not a register lookup. GLEIF runs the LEI system and is where the entity behind an LEI is confirmed.
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The result appears here. Nothing is stored, and the allowance is per visitor per day.
Example result
A well-formed LEI
- LEI
- 529900G3SW56SHYNPR95
- Length
- 20
- Check digits
- ISO 17442 match
- Verdict
- Well formed
- Where to confirm
- GLEIF
This is the format example GLEIF uses. The check reads the shape and the check digits, not the entity.
A real check above replaces this example.
What the check reads
- Twenty characters
- The count runs after spaces are stripped. Nineteen or twenty one characters fail, because an LEI is exactly twenty.
- Letters and digits
- An LEI uses digits and the letters A to Z. Lowercase input is folded to uppercase first, so a lowercase paste still checks.
- The check digits
- Positions nineteen and twenty are the check digits. The check expands each letter to two digits and takes the whole string modulo 97; a well-formed LEI leaves a remainder of one.
- The reserved characters
- Positions five and six are always 00, which is what tells an LEI apart from a similar twenty-character string. The check reads them.
- What this does not check
- Whether the LEI was issued, which entity holds it, and whether it is still active. GLEIF holds all of that in its register.
Where the answer comes from
- GLEIF
The Global Legal Entity Identifier Foundation runs the LEI system and holds the golden copy of every issued LEI.
Worked examples
Example inputs and the results they return.
A well-formed LEI
- LEI
- 529900G3SW56SHYNPR95
- Length
- 20
- Check digits
- ISO 17442 match
- Verdict
- Well formed
- Where to confirm
- GLEIF
This is the format example GLEIF uses. The check reads the shape and the check digits, not the entity.
Two characters transposed
- Length
- 20
- Check digits
- Do not match
- Verdict
- Not well formed
- Likely cause
- Two characters transposed
Swapping the last two characters breaks the modulo 97 sum, so the number cannot be a real LEI.
One character short
- Length
- 19
- Needed
- 20
- Verdict
- Not a complete LEI
A truncated paste is the commonest mistake, and the length check catches it before the check digits.
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