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International Dialing & SMS


Tropo developer accounts are massively enabled for free testing, and international dialing is no exception. While still using a developer account, you can call out to landlines in the following countries completely for free:


In order to make any outbound international call, you will need to contact support (either through the forums or via support@tropo.com and request access. You won't be able to dial any international mobile number while still in a developer account; using a production account, you can call out to any international number. Certain additional numbers are off limits all together, such as 911 for the US Emergency and 44999 for UK Emergency.

In order to dial an international number, it needs to be in the following format (this example is for the Netherlands with the country code 31):


No need to include 011 (the code you typically need to include to place a call an international number from the US).

Once you decide it's time to move into production, there are two different rates that get combined into the actual per minute rate for international calls. All outbound costs 3¢ a minute, then for international you add the international rate for the location. So if you wanted to call the U.K., it would be $0.03 + $0.0298 for a total cost of $0.0598 a minute. More info on pricing can be found here, including the cost for an international phone number.

International Phone Numbers


We offer local numbers in the US and 41 other countries - here's the full list of available countries, note that these are also free for developer accounts:


For Croatia, Norway and Germany, you'll need to provide documentation proving you live in the area that matches the phone number's country code and prefix (so if you request a number that begins with +49 221, you'll need to provide documentation proving you live in Köln, Germany).

We accept utility bills, an identification document (like a driver's license), a business license or a lease contract. We cannot accepts screen shots, business cards or letter head.

For France and Netherlands, we do not require supporting documentation, we just need a matching address.

When you open your application and hit "Add a new phone number", you'll see a hyperlink to open a ticket for numbers in these areas; once opened, you can include your documentation or address there. Note that the process to procure a number in your specific region can take up to 10 days, depending on number availability.

International SMS


Currently Tropo applications can send SMS messages to an International number if their application has an attached U.S. or Canadian number (Puerto Rico is excluded); this applies to both development and production applications. However, like international calling, you must contact support (either through the forums or via support@tropo.com) and request access. Applications with U.S. numbers can also receive SMS messages from International numbers.

However, International numbers attached to Tropo applications are not SMS enabled, so those applications would not be able to send or receive SMS at this time. We are, however, actively working on getting SMS enabled numbers in additional countries.



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