The “Know Your Customer Tenure” API provides an operator-verified signal that helps application developers assess the stability and trustworthiness of a mobile identity.

The API checks whether a phone number has had valid tenure with its current mobile operator since a reference date provided by the API consumer. In other words, it confirms whether the identified phone number has been associated with its current subscriber for at least the required period of time.

This information can be used as an additional trust and risk signal in workflows such as onboarding, authentication, account recovery, transaction monitoring, credit risk assessment and fraud prevention. Recently activated numbers may indicate a higher-risk profile, while long-standing numbers can increase confidence in the stability of the mobile identity.

The API is privacy-preserving by design: It returns a boolean confirmation indicating whether the tenure requirement is met. Where supported by the operator, the API may also provide the subscription account type, such as PAYG, PAYM or Business, to add further context for risk assessment.

This API provides:

• A tenure check function that allows an application to verify whether a phone number has had valid tenure since a customer-defined reference date.
• An optional contract type attribute, where supported, that can provide additional context for fraud prevention and trust assessment.