By default, your subaccount(s) will inherit the permissions of your master account. You can, however, disable inheritance, and manually select which countries are enabled for each subaccount.
Notice: When enabling countries manually, be sure to only enable countries to which you plan to call or send messages to.
Enable or Disable Subaccount Geographic Permissions Inheritance
- Login to your project at www.twilio.com/console.
- From the Console Dashboard, click Settings > Subaccounts.
- Click the View Subaccount next to the desired Subaccount.
- Visit the Programmable Voice or Messaging Geographic Permissions pages to enable or disable international inheritance: