Get a list of all carriers paste the following link into the address bar, replacing all
<variables> with those corresponding to your package, and then follow this link:
<api_key> - your unique API-key, you can find it on the "Profile" page in your Dashboard.
<package-key> - the key (login) of the package being used.
<country_iso> is the ISO code of your target country. For example, if you want to get a list of the available regions of Russia, you need to substitute it with ru;
<city_name> are optional.
Please note that this method is available only for packages with connection type "mobile".