Look up CNPJ records with Python and Radar CNPJ

Read the free record of each CNPJ in a list with the Python standard library. No key needed.

Updated October 14, 2026

1Copy the script

The script reads each record and prints the company name and status.

import json
import urllib.request

RADAR = "https://radar-cnpj.com/api/cnpj/"


def ficha(cnpj):
    limpo = "".join(c for c in cnpj if c.isalnum()).upper()
    with urllib.request.urlopen(RADAR + limpo, timeout=20) as resposta:
        return json.load(resposta)["data"]


for cnpj in ["00000000000191"]:
    empresa = ficha(cnpj)
    print(empresa["cnpjFormatted"], empresa["razaoSocial"], empresa["situacao"]["label"])

2Run the script

Run python3 radar.py and replace the list with your CNPJs.