European Number Verification Service
New Number Lookup Portal Service Add On
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The Challenge: Trust and Fraud Mitigation in Europe
Phone numbers have become a core part of personal identity, and across European digital ecosystems, many online and mobile services rely on one-time passwords over SMS for account registration or two-factor authentication. This creates opportunities for fraudsters to exploit insufficiently secured services and inconsistent number verification processes.
A common issue in European markets occurs when fraudsters create online accounts using invalid phone numbers. Without proper validation, automation can generate fake accounts later used for spam, fraud, or other illegal activities.
Across Europe’s telecom industry, fraudulent message and call transmission continues to rise. In pursuit of profit, fraudsters use techniques such as CLI refiling, artificial traffic generation, and spoofing of caller or sender IDs, exposing European operators and financial institutions to risk.
The netnumber European Number Verification Service
The netnumber European Number Verification service brings real-time phone number intelligence to help prevent a multitude of fraud types. European Number Verification evaluates the likelihood of a phone number being valid or invalid across Europe, enabling brands, enterprises, and communications service providers to enhance their number verification processes. With a simple, API-based implementation, the service allows existing user data to be scrubbed regularly so users with inactive phone numbers can be prompted to update their accounts and keep them secure.
As security concerns continue to grow across the European communications ecosystem, members of the telecom community must ensure that they are optimizing their fraud prevention and verification solutions for both messaging and voice origination and termination.
With European Number Verification, brands, enterprises, and communications service providers can validate phone numbers from any country in Europe to screen for potential fraud and maintain accuracy in their customer databases. Netnumber’s comprehensive data sets, DNO (Do-Not-Originate) number information, and sophisticated logic enable granular number verification that tightly aligns with customer use cases and traffic types.
These advantages make this service an ideal fit for addressing telecom, financial, or other fraud methods while securing messaging and voice transmission from origination to termination. Within the context of SMS and voice traffic, this ability to detect invalid phone numbers ensures providers can effectively avoid routing traffic originating from or destined to invalid numbers, reducing the costs associated with delivery. Contact centers and marketers also benefit from accurate phone number information — by not dialing out to invalid numbers, they can use agents’ time more effectively and avoid paying for SMS or calls that will never reach the recipient.
Industry Leadership
As a GSMA Open Gateway Initiative partner, netnumber works with leading European operators to strengthen trust, interoperability, and fraud prevention across the region.
Our European Number Verification service supports this global effort: helping GSMA members improve routing accuracy, protect users, and meet evolving telecom standards.
Looking for global coverage? Visit our Number Check overview.
Download Our Data Sheet
Number Check Key Features
Real-Time Number Intelligence
Returns validation results in milliseconds to support real-time messaging, voice routing, KYC, and financial verification workflows used by European enterprises and fintechs.
DNO (Do-Not-Originate) Data
Smart Logic
European Use Cases
User Account Verification
European Number Verification enables customers to strengthen their account verification upon new user registration. A customer prompts a new user to provide their phone number and then queries the European Number Verificationplatform with the phone number as a parameter. The answer is sent in real time by netnumber and includes an indicator of the phone number being valid or not. In the case of an invalid phone number, the customer can adapt the registration workflow by prompting the user to check the phone number format or by adding a CAPTCHA step for authentication.
Traffic Routing
European service providers can save some of the cost of terminating SMS or voice calls by checking if the receiving phone numbers are valid or not. Routing messaging or voice traffic to invalid numbers can be avoided, and the corresponding termination cost can be saved. European Number Verification validates the originating number too, flagging those that might be DNO (Do-Not-Originate) or helping mitigate CLI refiling in an Origin-Based Rating (OBR) scenario.
Fraud Mitigation
Risk scoring of telephone numbers is essential for fraud prevention purposes. Different data points give useful information about the risk associated with certain actions — for example, a service sign-up attempt or a financial transaction. With European Number Verification, fraud prevention algorithms can attach a higher risk to invalid or unreachable numbers across Europe, helping providers strengthen regional messaging and voice security.
Benefits of European Number Verification
- Helps prevent fraud using real-time European phone number intelligence
- Helps communications service providers implement FCC number verification requirements
- Strengthens verification and customer onboarding workflows
- Improves message and call delivery rates across Europe
- Helps call centers and marketers reduce costs by eliminating dial-outs to invalid phone numbers
The Number Lookup Portal: A Number Check Enhancement
Enable Faster and Smarter Responses Across Business Support Functions with No API Integration Needed
We know that quick action is crucial in our fast-paced, complex world. That’s why we’ve developed a new, easy-to-use service that gives our customers, including non-technical support staff, instant access to Number Check authoritative phone number intelligence services — no API integration needed.
Our secure, convenient portal is ideal for support teams handling real-time inquiries, fraud analysts investigating suspicious activity and product or operations teams performing validation checks before launching services. With virtually no training, users can log in, enter one or more phone numbers and receive real-time results, all while leveraging the same high-quality data and global infrastructure as our API-based offerings.
Number Lookup Portal Benefits:
- Supports single number lookups or up to 100 phone numbers in one go
- Secure, intuitive, user-friendly web-based interface designed for support, fraud, operations or business teams
- Ideal for one-off lookups, investigative deep dives, or batch queries during testing phases
- Data elements returned in the portal are the same as those from our APIs
To learn how netnumber’s European Number Verification can help your organization protect communications and improve service quality across Europe, contact us.