NCC Mandates Telcos to Flag Fraudulent Numbers in Real Time

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Nigeria’s telecom regulator is stepping up its fight against digital fraud with fresh rules that put real-time responsibility squarely on the shoulders of mobile operators.

The Nigerian Communications Commission (NCC) has proposed new requirements that would compel telcos to flag suspected fraudulent or high-risk phone numbers in real time. The move forms part of a broader push centered on the Telecoms Identity Risk Management System (TIRMS), a centralized platform designed to let banks, telcos, and other authorized entities check the risk status of any mobile number before granting services.

At the heart of the problem, according to the NCC, is the lifecycle of SIM cards. Churned, recycled, swapped, or barred numbers are increasingly being reused by fraudsters for scams, identity theft, and financial crimes. Once a number is flagged for suspicious or criminal activity, service providers would be able to verify its status instantly through TIRMS rather than discovering the risk after damage has been done.

To support the platform, the NCC is consulting on amendments to its Quality of Service and Registration of Communications Subscribers regulations. Key changes include:

• Requiring operators to notify subscribers at least 14 days before churning (deactivating and recycling) their lines.
• Mandating telcos to upload details of all churned numbers to the TIRMS platform within seven days.
• Establishing a formal framework for blocking numbers that were fraudulently registered or misused.

The proposals were discussed at a stakeholders’ forum in Abuja this week, where NCC Executive Vice Chairman Dr. Aminu Maida described recycled numbers as a major vector for fraud that erodes trust across Nigeria’s digital economy.

For Nigeria’s fintech sector, already grappling with rising cases of SIM-swap fraud, phishing, and unauthorized transactions, the rules could prove significant. Banks and other digital service providers would gain the ability to query a number’s history in real time, potentially reducing exposure when onboarding new customers or processing high-value transfers.

Telcos, including MTN, Airtel, Glo, and 9mobile, will bear the operational burden. They will need to integrate with TIRMS, update internal processes for churn management, and ensure timely flagging of risky numbers. While the exact compliance timeline is still under consultation, the direction is clear: faster detection and fewer loopholes in the SIM ecosystem.

The initiative reflects a maturing regulatory approach in Nigeria’s digital space. After years of focus on SIM registration and NIN linkage, the NCC is now targeting the downstream risks that emerge when numbers change hands. It also aligns with growing cross-sector collaboration between telecoms and financial regulators to close gaps that fraudsters have exploited.

Implementation won’t be seamless. Operators may face added costs for system integration and data sharing, while questions remain around data privacy, false positives, and how quickly the platform can scale across millions of numbers. Consumer groups will likely watch closely to ensure legitimate users aren’t unfairly impacted by blocks or delays.

Still, the intent is straightforward: make mobile numbers more accountable and reduce the ease with which fraudsters recycle compromised lines. If effectively rolled out, TIRMS and the accompanying rules could strengthen confidence in both telecom services and the broader digital financial system that depends on them.

The NCC is currently gathering feedback from industry players. The outcome of this consultation will determine how quickly, and how stringently, Nigeria’s telcos are required to police fraudulent numbers in real time. For a country where mobile money and digital transactions continue to expand rapidly, getting this balance right carries implications well beyond the telecom sector.