The Siren number is a nine-figure identifier attributed to each legal unit. The first eight figures have no meaning, except in the case of public bodies (municipalities, etc.), whose Siren number must start with 1 or 2. The ninth figure is a control figure to validate the number.
<div xmlns="http://www.w3.org/1999/xhtml"><p>The Siren number is a nine-figure identifier attributed to each legal unit. </p><p>The first eight figures have no meaning, except in the case of public bodies (municipalities, etc.), whose Siren number must start with 1 or 2. The ninth figure is a control figure to validate the number.</p></div>