French SIREN/SIRET checksum validation (Luhn + La Poste exception), offline

Instant pre-validation of French company numbers before invoicing or costly Sirene API calls. Auto-detects SIREN (9 digits) vs SIRET (14 digits), applies the INSEE Luhn rule and the documented La Poste exception (356000000*: digit sum mod 5). Query: ?number=44306184100047 (spaces/dots/dashes tolerated). Returns valid, type, siren, nic and the rule applied. Pure offline computation, 1y cache.

get/v1/fr/siret-check

Request

  • Base URL: https://data.greeneris.io (the document declares no server; this is the origin it was published from)
  • URL: https://data.greeneris.io/v1/fr/siret-check
  • Auth: none declared

Query parameters

numberstring required

SIREN (9 digits) or SIRET (14 digits); separators allowed

Response

Successful response

unknown required

Changes

No recorded changes to this operation across all 1 revision of this API.