Page 43 - Cyber Defense eMagazine December 2023

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• Deploying a Dependable DNO List – A Do Not Originate (DNO) list protects users from fraudulent
spam calls. The list identifies calls that originate from invalid, unallocated, and/or unused
numbers, helping to prevent telecom fraud on known inbound-only and invalid
numbers. Regulators across the world are increasingly deploying DNO lists for carriers and
enterprises to check numbers against.

• Leveraging Trustworthy GNR Data – Carriers can also leverage Global Number Range (GNR)
data to strengthen their defence against robocalls. Access to real-time GNR data provides
organisations with the insight to block or accept traffic based on potentially fraudulent CPN/CLI
modification. GNR data can cover thousands of operators across hundreds of destinations.
Carriers benefit from visibility into the validity of numbers to identify which number ranges are
unallocated, ensuring that their traffic is legitimate and has the potential to reach its intended
recipient without being blocked.

Addressing Advanced Robocall Tactics

With generative AI causing a major rise in harmful robocalling, tackling this issue is a top priority.
Deploying a comprehensive trusted DNO list and exhaustive GNR data arms carriers with the ability to
detect invalid and fraudulent numbers, making it easier for them to protect their consumers and focus on
building trust.

Taking proactive action against robocalling is essential to secure the future of the voice industry. GNR
and DNO solutions are essential to support the termination of legitimate voice traffic while guaranteeing
adherence to the latest robocalling rules.

About the Author

Tim Ward, Chief Strategy Officer, joined XConnect in November 2016 to lead the
Number Information Services division, with responsibility for sales, marketing and
product management, launching a range of innovative services for applications,
messaging and interconnect providers that set new standards for access to
network, service and user information.

Tim has over 30 years of experience in technical, sales and marketing roles
across the telecoms industry.

He is passionate about establishing a level playing field across the industry, with a common set of
standards to ensure the highest quality of service. He sees XConnect playing a pivotal role in this and,
as such, works with key industry stakeholders and bodies such as MEF and GSMA to drive this agenda
forward. Tim can be reached on LinkedIn and at our company website https://www.xconnect.net

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