Adding a region flag to the authorization header enables one to specify which country IP to use to process the request. The value of this parameter is a case insensitive country code in 2-letter. For example, de for Germany, gb for the United Kingdom, and th for Thailand proxy. For more details, please refer to the backend list。
Here are a few examples of country parameters:
region-usregion-gbregion-brregion-sgregion-ar
Code example
In this example, a query is performed from a random IP address from Brazil:
USERNAME-zone-custom-region-BR:PASSWORD