Hi all, I have written a PHP class to validate Eu VAT Numbers. It queries the VIES SOAP API and validates the format beforehand. There is a set of regular expressions to validate the number and it would be great if companies with a valid EU VAT number could check if their number is correctly validated. The project is here : https://github.com/suikatech/EuVatValidator It runs on PHP, and you can use the demo file to validate your number using the form included. Please tell your country in your feedbacks. Thanks !