Belgium APIs

National register and BIS number checks with birth date and sex, postal codes, holidays, IBAN and VIES.

What LiveAPI covers in Belgium

ID and tax numbers	Rijksregisternummer / Numéro national
Postal codes	2,700+ postal codes with region and province.
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	Not covered.

ID, tax and company numbers

Rijksregisternummer / Numéro national POST /v1/validate/BE/national_number
11 digits, mod 97 (before and after 2000), BIS numbers too. Example: 85.07.30-033.28

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

More Belgium 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.

Get 100 free calls Docs

Validate a Rijksregisternummer / Numéro national

curl -X POST https://liveapi.io/v1/validate/BE/national_number \
  -H "Authorization: Bearer $LIVEAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"85.07.30-033.28"}'

Look up a postal code

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