The Line Tenure API allows service providers to check how long a mobile phone number has been associated with its current user. It returns a binary result confirming whether the line was active before a given reference date—providing a simple but powerful signal of identity stability.

In addition to tenure status, the API may also include the type of line—such as prepaid, postpaid, or enterprise—which adds context to the risk assessment. For example, a long-standing postpaid line typically indicates a higher trust level than a newly activated prepaid line.

A service (e.g., a bank) submits a phone number and a reference date. The Line Tenure API returns a binary response—true or false—depending on whether the mobile line was active before that date.

Primarily, the Line Tenure API provides a boolean value indicating if the number is older than a specified threshold. Optionally, it may include the type of contract (e.g., prepaid, postpaid, enterprise) if supported by the operator.

The Line Tenure API supports a wide range of fraud prevention and identity risk assessment scenarios, particularly where verifying thestability of a user's mobile identity is critical. Key use cases include:

• Fraud prevention during on boarding: Flagging accounts using recently activated phone numbers, often linked to synthetic identities or money mules.
• Credit risk scoring: Using line tenure as a proxy for user stability and trustworthiness in loan or credit approval processes.

Fraudsters often use recently activated phone numbers to evade detection. The Line Tenure API identifies these "fresh" lines in real time, enabling institutions to block or review high-risk users early.

Yes. By verifying that a user's mobile number has long-standing tenure, companies can approve low-risk users faster, reducing false fraud alerts and manual reviews.

No, the Line Tenure API is designed with privacy by design principles. It does not return PII (personally identifiable information), only anonymized tenure verification results.

Yes. It follows the CAMARA standard, supported by the GSMA and Linux Foundation, and is accessible through the Open Gateway initiative across multiple operators.

SIM Swap detects recent changes in the SIM card or IMSI, while Line Tenure focuses on the total age of the phone number assigned to the user. They are complementary signals for fraud detection.

While designed primarily for financial services, Line Tenure is also valuable in insurance, government services, e-commerce, and any domain wheremobile identity is part of user verification.

Yes. The Line Tenure API is designed to complement other network-based fraud signals such as SIM Swap, Number Verification, or Device Status.

Combining these APIs provides a more complete view of user trustworthiness,enabling stronger, layered fraud prevention strategies—especially in high-risk scenarios like on boarding, payment authentication, and account recovery.

The Line Tenure API allows clients to define a custom reference date against which the mobile line's age is evaluated. This means institutions can tailor the logic to their specific risk appetite—for example, flagging numbers newer than 7, 30, or 90 days depending on the sensitivity of the transaction or use case. This flexibility enables dynamic fraud strategies aligned with evolving threats and regulatory needs.