1、打开欧盟VAT查验网址:http://ec.europa.eu/taxation_customs/vies/vatRequest.html
2、选择需查询税号的国家代码(例:德国DE),输入欧盟VAT税号(不含国家代码),点击【Verify】查验
3、跳转查验结果,“Yes, valid VAT number”表示税号为生效状态;若是“No, invalid VAT number for cross border transactions within the EU (please refer to FAQ
questions 7,11, 12, 13 and 20 for more information)”则为无效