Free tool
SIREN and SIRET lookup
A SIREN is the nine-digit number of a French legal entity, and a SIRET is the same number plus a five-digit establishment code (14 digits). Type either and get the company behind it from the French register: legal name, legal form, status and city, live. The check digit is verified in your browser first, so a mistyped number is caught before the lookup.
The same lookup with curl
curl "https://api.prometiam.com/functions/v1/risk-api/companies/search?siren=552032534&country=FR" \ -H "Authorization: Bearer rk_live_your_api_key"
What a SIREN and a SIRET are
A SIREN is the nine-digit number INSEE assigns to every legal unit in France — a company, an association, a public body or a sole trader — when it enters the Sirene register. It never changes and it is the number the trade register (RCS), the tax administration and the BODACC all key on.
A SIRET is fourteen digits: the SIREN followed by a five-digit NIC that identifies one establishment of that unit. A company with three branches has one SIREN and three SIRETs; the head office is the siège. Both carry a Luhn check digit over the whole number, which is why a single wrong digit is caught before any lookup.
The French VAT number is derived from the SIREN: the letters FR, a two-character key and the nine digits. So one identifier unlocks the others.
What the lookup returns
The lookup sends the number to the Prometiam API, which holds the French register as published through the BODACC and Sirene, and returns the legal name, legal form, current status, city and founding date. A SIRET is reduced to its SIREN before the search, because the register is keyed on the legal unit.
Directors, filings, corporate events, insolvency notices and the full record are one call away with a free trial key — 500 credits over 14 days, card required, nothing charged for 14 days. The same identifier also finds the company’s public-procurement awards and, for a company in difficulty, its collective proceedings.
FAQ
Is a SIREN the same as a SIRET?
No. The SIREN identifies the legal entity; a SIRET identifies one of its establishments and is the SIREN plus a five-digit NIC. A company has one SIREN and at least one SIRET.
Why does a valid SIREN return nothing?
A unit created in the last few days may not have reached the register yet. Sole traders are served (legal form EI), but most of them restrict their publication with INSEE: such an entity, like any non-diffusible unit, is returned with the status non_diffusible and no name (company_name is null), which means unknown, not inactive; the name search never returns it, the SIREN lookup does. Try the name search, or check the number on the official Sirene service.
Can I do this in code?
Yes: GET /companies/search?siren=552032534&country=FR with an API key returns the same record as JSON; the free trial covers 500 credits over 14 days.
What is a SIREN number in France?
A SIREN is the nine-digit number INSEE gives every French legal unit: a company, association, public body or sole trader. It never changes and is the key the trade register, the tax administration and the BODACC use.
How do I find a SIRET number from a SIREN?
A SIRET is the SIREN followed by a five-digit NIC for one establishment, so the SIREN alone does not tell you the SIRET. Look the company up in the Sirene register for its establishments; the head office is the siège.
Can a SIRET be used to identify a French company?
Yes. The first nine digits of a SIRET are the SIREN of the legal entity. This lookup reduces a SIRET to its SIREN before searching, because the register is keyed on the legal unit.
Is a SIRET the same as a NIF?
No. The NIF is Spain's tax number, a letter, seven digits and a control character. France identifies companies by SIREN (9 digits) and establishments by SIRET (14 digits). The NIF lookup covers Spain.
Is the SIREN the French VAT number?
Not by itself, but the French VAT number is built from it: the letters FR, a two-character key and the nine SIREN digits.