You can get started with Vonage's CAMARA APIs https://developer.vonage.com/en/getting-started-network/concepts/network-apis
With a sandbox account you can get started within a few minutes (you can add your own number phone and do any sort of POC with Number Verification, Sim Swap, Device Location...) https://developer.vonage.com/en/getting-started-network/concepts/sandbox?source=getting-started-network