siren

Validates a SIREN (Système d'Identification du Répertoire des Entreprises) number, the French company identifier.

Options

Option	Type	Default	Description
message	string	locale default	Custom error message

Playground

Valid values

Value	Notes
"732075312"	SIREN of Total S.A.
"552032534"	SIREN of Air France

Invalid values

Value	Reason
"732075313"	Fails Luhn checksum
"12345678"	Only 8 digits instead of 9

Notes

• Empty string ("") always returns valid: true. Combine with notEmpty to require a value.
• SIREN is exactly 9 digits, validated using the Luhn algorithm.