Syniverse Phone Number Verification API
Single-number lookup service that returns the current carrier, line type and status of a phone number so an enterprise can detect ported, deactivated, disconnected or reassigned numbers. Batch file lookup and proactive number monitoring are offered alongside it through Batch Automation and the Event Manager.
Documentation
Documentation
https://sdcdocumentation.syniverse.com/index.php/phone-number-verification/getting-started/phone-number-verification-overview
APIReference
https://sdcdocumentation.syniverse.com/index.php/phone-number-verification/api-reference/explore-pnv-api-reference