FedEx Shipping plugin for WooCommerce displays live shipping rates at cart / checkout pages and validates shipping address before allowing to place an order.
Address Validator for WooCommerce automatically validates and corrects billing and shipping addresses for 240+ countries world-wide (https://www.byteplant.com/address-validator/).
With the PostNL Address Validation for WooCommerce plug-in you can easily find a Dutch or International address in the check out. This way you always ship to the right address.