International Voice Permissions and how they work

Want to learn more about managing International Voice Dialing Permissions on your Twilio project? Need to make outbound calls outside of the U.S, and want to select the regions and countries you’ll allow to protect your project from high-cost routes and potential fraud?

On this page, we’ve pulled together answers to our Partners’ most frequently asked questions about the International Voice Dialing Permissions feature at Twilio.

What are International Voice Dialing Permissions?

You can use Twilio to place outbound calls globally. While you can reach many countries with Twilio right out of the box, International Voice Dialing Permissions will allow you to make outbound voice calls to nearly anywhere in the world.

World Wide Calling

When your project receives International Voice Dialing Permissions, your existing subaccounts will need to be updated to their proper permissions. However, any subaccounts that you add will inherit the parent accounts permissions. Each subaccount’s permissions can then be modified to your preference. Please carefully consider the appropriate permissions for your project and any subaccounts. There is no need to enable a country or region if neither you nor your customers need to make calls to that country or region.

How does the International Voice Dialing Permissions feature work?

Currently, this feature is not offered to all Twilio users so you must submit a special request form with detailed information indicating your company or personal need for this feature.  Upon receipt of your Permissions request form, Twilio will review your information.

You can complete the request form here: International Permission Request Form

Twilio takes your financial security seriously and monitors against unwanted dialing behaviors, but it is your responsibility, as the project owner, to set your own permissions and security settings.

Whenever enabling a worldwide calling feature, your susceptibility to fraudulent activity or abusive calling increases. It’s therefore important to take proper security measures, regularly monitor your usage, and limit the number of countries and regions you support to only those you need. We strongly recommend enabling only the countries and regions that you know you will need.

Can I manage different international dialing permissions for individual subaccounts?

Yes. Twilio recommends enabling only the countries each subaccount will need to access.  For more info on configuring subaccounts see here:

How do I detect irregular activity in my project?

It’s important to continuously monitor your usage for any unwanted behaviors, particularly the usage in any subaccounts. Usage triggers can be particularly helpful in solving this.

What do I do if I notice irregular activity in my project?

If you notice any irregular activity on your project immediately contact, as well as your Twilio account manager. Twilio takes the financial security of our users seriously, but it is still the responsibility of the project owner to reach out to us immediately.

Once an incident is reported, we can suspend all activity on a project or subaccount, or block a certain prefix while an investigation ensues. It is better to be safe and temporarily out of service, than risk high charges and abusive activity.

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