Plivo provides a variety of options to make an outbound call, including a way to make an outbound call to a list of phone numbers. There are two ways to achieve this:
Trigger an API for each destination number at one time: https://www.plivo.com/docs/voice/detailed-reference/api/call/make-a-call/
Alternately, the easy way to achieve this goal is to trigger an API for all the numbers at once by adding them with a delimiter '<' in between: https://www.plivo.com/docs/voice/getting-started/advanced/make-bulk-calls/
You can also dial a list of numbers sequentially or simultaneously through our XML.