Twilio has a (US-only) API for this: https://www.twilio.com/docs/lookup/tutorials/carrier-and-caller-name https://www.twilio.com/docs/lookup/tutorials/carrier-a

Twilio has a (US-only) API for this: https://www.twilio.com/docs/lookup/tutorials/carrier-and-caller-name https://www.twilio.com/docs/lookup/tutorials/carrier-and-cal... Im not sure what banks use, but I have had UK VOIP numbers flagged before when trying to register them for 2FA, so theres likely API providers for other countries.