[overfeed]

> legitimate interconnect in the US is stupid cheap

This is a to take advantage of "free calls to North America" provided by MVNOs, and free < cheap. Twilio starts at $0.01/min; 1 cent/minute x 200 lines results in a delta of $2.8k per day. I'm assuming a 20% utilization rate[1] on a device that holds 1000 SIMs

Further, it's a way to bypass STIR/SHAKEN requirements for a less-than-legitimate VOIP termination operations, which can attract paying customers that want to evade detection, typically criminal endeavors.

1. 20% utilization is pretty generous, but even if its 2%, not using Twilio is profitable at scale.