France APIs

SIREN, SIRET and NIR checks (including La Poste SIRETs and Corsican NIRs), postal codes, holidays, IBAN and VIES.

What LiveAPI covers in France

ID and tax numbers	SIREN, SIRET, NIR
Postal codes	51,000+ postal codes with region and department.
Public holidays	National holidays via Nager.Date.
IBAN	Length and checksum, with the country's IBAN format.
VAT numbers	Live check against EU VIES.
License plates	Format checks.

ID, tax and company numbers

SIREN POST /v1/validate/FR/siren
9 digits, Luhn; returns the derived FR VAT number. Example: 732829320
SIRET POST /v1/validate/FR/siret
14 digits, Luhn (La Poste rule for SIREN 356000000). Example: 73282932000074
NIR POST /v1/validate/FR/nir
15-digit social security number with its key; returns sex and birth month. Example: 295109912611193

Checks are algorithmic only (registry_checked: false). Values are never stored or logged.

More France APIs

EU VAT validation API

FAQ

Can I check a live VAT number?

Yes. POST /v1/vat/validate asks the European Commission's VIES service whether the VAT number is active.

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Validate a SIREN

curl -X POST https://liveapi.io/v1/validate/FR/siren \
  -H "Authorization: Bearer $LIVEAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"732829320"}'

Look up a postal code

curl https://liveapi.io/v1/postal-codes/FR/{code} \
  -H "Authorization: Bearer $LIVEAPI_KEY"