IIRC, Twilio offers a paid STUN/TURN service. But you could also self-host it using some open source TURN server, since all it requires is a public IP address (

IIRC, Twilio offers a paid STUN/TURN service. But you could also self-host it using some open source TURN server, since all it requires is a public IP address (with the caveat of course that it might not be geographically close to the end user).