Telephone number verification for use with caller identification service

Abstract

The present invention relates to techniques for verifying 'alien' telephone numbers for use as caller ID numbers. The system provides a configuration portal for administrative users to establish caller ID settings, including the option to replace a default telephone number assigned to a user/device with an alternative, alien number. A verification process involves generating a secret code, which is then communicated to a designated individual at the alien number through an outbound call. The individual confirms control by providing the secret code. Alternatively, an API request is made to a verification service. The system supports various attestation methods, including SIP protocols, SHAKEN framework, and delegated certificates, to convey the authentication status to carriers handling the call routing. This ensures the integrity of caller identification and prevents caller ID spoofing, enhancing trust and security in telecommunication networks.