Depending on the country where your device is located, different prices for data and SMS consumption will apply.
To understand which country is part of which rate zone, navigate to "Tariff Profiles" and select one of them. In the tab "Rate zones" you can see the zones you have activated in green. Click on the green button "Export" to download the list of countries with the rate zone they belong to in a .csv datei.
The list of countries, the rate zones they are part of and the carriers available are then available as below: