I highly doubt Twilio knowingly allows this to happen. Furthermore, if anyone linked their card with Twilio, it would not have been hard to track down who is doing this and freeze their assets (from a fed agency perspective) or at least block their account (from Twilio's mod team perspective).
I've been a Twilio customer for a long time. They don't allow you to spoof caller ID. You can only set outgoing caller ID to a real number that you own or have access to.
How does not allowing spoofing caller ID help defeat robocallers.
People use twilio to robocall individuals from their same area code. No “spoofing” caller ID is needed. Twilio makes is stupid simple for robocallers and I can speak with authority on this matter hence why this is a throwaway account.
