Why do calls to some international phone numbers fail?
By default PivaTel blocks calls to high-risk / high-fraud prefixes. This could be due to excessively high costs for the destination, or known targets for fraud calls and voice abuse.
A list of high-risk prefixes blocked by default is available here:
If you have a legitimate need to call a number on the block list, please send a request to [email protected] with the prefix in question and we will create an exclusion for you.