You can limit access to your content for listed countries. To enable the option navigate to CDN Resources, click Settings, open the Advanced Settings, in the Access (Security) click Add Policy and find Country Access Policy.
By default, there are no restrictions by country to your CDN Resource. You can set up Allow or Block policy.
Allow Country Access Policy
Access to the Resource is allowed for all of the countries except for the specified in the field.
Block Country Access Policy
Access to the Resource is denied for all of the countries except for the specified in the field.
You can specify countries only one by one via Control Panel. To add the list of the countries use API.