Verify and validate customers globally using their phone number.


Discover the network provider for every mobile number globally.


Protect customers, accounts, and transactions within your app.


Discover if a mobile number is assigned to a subscriber.


A real time phone number credibility score.


Identify if a number has the propensity to be used for fraud.

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Prevent Telephony
Fraud Globally

Prevent CLI Spoofing, Origin Based Rating, ISRF, One-ring/Wangiri and more

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Telephony Fraud Prevention

TeleShield is a powerful telephone fraud prevention API which protects both your business and your genuine customers. It provides robust and dependable security against a range of telephone-based fraudulent activities such as flash calls, International Revenue Share Fraud (ISRF), Origin Based Rating (OBR), ‘Wangiri’ scams, premium rate number fraud, telephone number spoofing and more.

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Why use TeleShield™?

The service is based on live access to authoritative global data and can be easily integrated into your business processes with the option of standard or enhanced insights into numbers’ history and integrity. This allows users to detect telephony and telecommunications fraud – and protect themselves from it. Which in turn is a means to achieving a reputation for reliability from customers

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Global Number Range Plans

Our integrated full number range plan has mapped all allocated and available number ranges to operators for every country in the world. So even if a number is not in our portability database (because it has not been ported), we can still return the correct routing information.

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Maximise your company’s ability to identify and prevent telecommunications fraud

Eliminate surcharges from Origin Based Rating fraud

Prevent domestic and international call-back fraud costs

Industry-leading coverage of 240 countries or territories

OBR Fraud Prevention

OBR fraud, involving telephone number spoofing, occurs when a fraudster replaces the originating number to exploit lower call termination rates. TeleShield prevents such scams by identifying invalid calling numbers, avoiding surcharges. It can even retrospectively detect attacks, enabling you to pass surcharges back to the call originator

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IRSF Fraud Prevention

IRSF fraud poses a significant threat to businesses, involving costly attacks using premium rate numbers. TeleShield safeguards against this by identifying and eliminating fraudulent premium rate numbers from the callback process, preventing potential financial losses

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Case study

TeleShield Case Study

Providing a real-time customer liveness check that allows you to check which mobile numbers are no longer active

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TeleShield Coverage Map

TeleShield™ FAQ

Telephony fraud is the act of making money illegally from a communication service provider or its customers by through the use of telecommunications services. Telephony fraud can take many forms, for example, infiltrating a telephony network or using rogue operators to redirect calls/texts to international premium rate number, among others.

Phone number verification plays an essential role in the detection and prevention of telephone fraud. It includes analysis of mobile and fixed phone numbers, with the goal of identifying phone attributes that contribute to assessing the fraud risk for a number. This includes whether the number service type is suspicious or if it is part of a high risk range.

Our number range information is the most comprehensive and up-to-date offered.  It includes global, coverage,  including 240 countries and territories worldwide.

Yes. The Global Number Range plan is a critical component of our data infrastructure. We utilize our number range data for the processing of billions of queries monthly. Given the importance of having accurate data,  we have a dedicated team responsible for tracking of industry numbering changes, as well as the proactive update of the countries, according to strict SLAs. This includes  daily review and subsequent update of the data with operator posted IR21s and ITU changes,  as well as working with operators to clarify changes that do not appear to be correct.

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What Our Customers Are Saying

"BTS (Business Telecommunications Services) is successfully using TMT’s Velocity and Live services to check the status of mobile numbers. This way we make sure we optimize the performance of the service offered to our customers and ensure the quality of terminating traffic to all countries.”

Business Telecommunications Services

"Working with TMT’s TeleShield service has expanded our ability to detect fraud and minimise the risk to our business. TeleShield brings peace of mind and the opportunity to stop fraud before it affects our customers’ bottom line or the service."

Six Degrees Labs

"LATRO relies on TMT’s TeleShield to provide the most up to date and reliable numbering qualification information within our fraud reporting tools, enabling us to protect our customer’s revenues and empowering them to defend themselves against fraudulent numbers."


"TMT is a valued partner that enables us to manage our routing costs effectively. They proactively and continuously expand their operator and country coverage while delivering exceptional customer service. We can always count on them to achieve high-quality results and look forward to our continued collaboration."

Global Message Service

"TMT provides us with the most comprehensive numbering intelligence data through their fast and reliable Velocity and Live services. TMT is a trusted partner for us, their products ensure that we continue to optimise the best performance and service to our customers."

Global Voice

"TeleShield from TMT gives 42com the power to detect and target telephony fraud scams internationally, thereby protecting our company from the financial and customer experience impacts of telecommunications fraud."

Alberto Grunstein - CEO

"It has been a pleasure to work with the team at TMT. They have become an essential provider of accurate numbering data information and Number Portability services globally."

Luisa Sanchez - VP of SMS and Messaging Solutions, Identidad Technologies

"Deutsche Telekom Global Carrier uses TMT ID as one of their key suppliers for Mobile Number Portability Data services. Deutsche Telekom Global Carrier uses TMT ID’s Velocity MNP solution. This is an ultra-fast query service that optimises the routing of international voice calls and A2P messaging."

Deutsche Telekom Global Carrier

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