3 ms·

Probably to avoid tipping off the robo-callers' authors

• penagwin 8y ago
  Tip them off in what way? They couldn't possibly do anything meaningful.
  • jameshart 8y ago
    In theory, since the numbers are essentially made up for each outbound call, the combination of spoof source numbers and call times would be enough for some robocaller/s to correlate with their outbound call logs and discover which number it was that they dialled that reached the CEO of Twilio. That seems like useful info? In fact the timestamps and partial numbers are probably good enough for that.