Twilio allows you to set the caller ID on outbound calls to a number you have verified that you own. We use this to set caller ID to office phone line for example.
This is done by setting the "From" parameter when creating a call.
To avoid spoofing, twilio first verifies that you own it before you can use it:
For my needs, I will be importing phone numbers that we already own from my own twilio account, so we don't need you to implement the caller ID registration, I only need a way to set the "From" on calls.