API zur Prüfung von Umsatzsteuer-Identifikationsnummern

# validate a VAT number
curl --request GET \
    --url "https://api.vatcheckapi.com/v2/check?vat_number=LU26375245" \
    --header "apikey: YOUR-APIKEY"

// validate a VAT number
$url = "https://api.vatcheckapi.com/v2/check?vat_number=LU26375245";
$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ["apikey: YOUR-APIKEY"],
    CURLOPT_TIMEOUT => 30,
]);
$response = curl_exec($ch);
curl_close($ch);
print_r(json_decode($response, true));

// validate a VAT number (Node 18+, built-in fetch)
const response = await fetch('https://api.vatcheckapi.com/v2/check?vat_number=LU26375245', {
    headers: { apikey: 'YOUR-APIKEY' },
});
const data = await response.json();
console.log(data);

// validate a VAT number
try {
    String url = "https://api.vatcheckapi.com/v2/check?vat_number=LU26375245";
    URL urlForGetRequest = new URL(url);
    String readLine = null;
    HttpURLConnection connection = (HttpURLConnection) urlForGetRequest.openConnection();
    connection.setRequestMethod("GET");
    connection.setRequestProperty("apikey", "YOUR-APIKEY");
    int responseCode = connection.getResponseCode();

    if (responseCode == HttpURLConnection.HTTP_OK) {
        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        StringBuffer response = new StringBuffer();
        while ((readLine = in.readLine()) != null) {
            response.append(readLine);
        }
        in.close();
        System.out.println(response.toString());
    } else {
        throw new Exception("Error in API Call");
    }
} catch (Exception ex) {
    ex.printStackTrace();
}