Working Together to Combat Robocalls

Clayton, MO. – May 14, 2024 – NUSO, a leading provider of SaaS communication services, and TransNexus, a leader in innovative software designed to manage and protect telecommunications networks, today announced their latest strategic initiative to combat unwanted robocalls and robotexts. The two companies are working together to leverage and implement Somos’ RealNumber DNO (Do Not Originate) dataset to protect consumers from unwanted fraudulent calls and texts.

“This initiative with TransNexus, leveraging an industry best-in-class DNO list, furthers NUSO’s commitment to providing secure and reliable cloud communications to our customers, and builds upon our existing anti-fraud and anti-spam infrastructure already in place,” said Paul Matte, COO of NUSO. “This addition further strengthens our solution to protect customers from unwanted calls and texts.”

NUSO’s solution advances consumer protection by combining RealNumber DNO with additional industry and proprietary DNO lists, automated fraudulent traffic detection and mitigation processes, a complete implementation of STIR/SHAKEN, strict adherence to robocall mitigation practices such as the robocall mitigation database (RMD), and many other due diligence and Know Your Customer (KYC) policies.

“Combining Somos’ RealNumber DNO data with TransNexus call analytics is a powerful tool to protect subscribers from unwanted and malicious calls,” said Jim Dalton, Chief Executive Officer of TransNexus. “Social engineering combined with vishing is a significant threat vector for enterprises. Blocking calls from telephone numbers that should never originate calls is a fundamental security feature and major benefit for enterprise customers.”

“RealNumber DNO, a cornerstone of Somos' Fraud Mitigation and Data Integrity solutions, serves as an essential asset in supporting service providers in combating telecom fraud,” said Bill LaRuffa, Senior Director of Business Development at Somos. “We are excited to see its growing adoption across the telecom industry and are thrilled to continue our partnership with both TransNexus and NUSO.”

The companies and their people are proud to be working together to achieve the mutual goal of reducing, and one day eliminating, fraudulent calls and text messages.

About TransNexus

TransNexus is a leader in developing innovative software to manage and protect telecommunications networks. The company has over 25 years’ experience in providing telecom software solutions including branded calling, toll fraud prevention, robocall mitigation and prevention, TDoS prevention, analytics, routing, billing support, STIR/SHAKEN and SHAKEN certificate services. Visit for more information.

About Somos

As the world becomes more interconnected, Somos enables brands, consumers, and communities to communicate in an environment of greater trust and convenience. Somos is a global, trusted source of phone number administration, routing data, identity verification, and identity management services for the telecommunications ecosystem. As the trusted administrator of the North American Numbering Plan (NANPA), Toll-Free Numbering (TFNA), and the Reassigned Numbers Database (RND), we support over 1,400 service providers in North America and manage over 7 billion phone numbers to enable seamless communications between enterprises and consumers.

XConnect, a Somos company, extends the reach of Somos' solutions to a global audience through its portfolio of trusted phone number intelligent solutions covering hundreds of different datasets serving the global voice and message ecosystems.

Through our global portfolio of products and services, and a collaborative approach in everything we do, Somos helps ensure trust in an increasingly digital world. To learn more about Somos, please visit

About NUSO

NUSO delivers a diversified portfolio of Cloud Communications and CPaaS enablement solutions. The Company’s full-stack offerings are enabled by its frictionless service delivery. The Company maximizes resiliency while minimizing cost to channel partners and direct customers through native control of all service layers from the network foundation to the business application. The Company addresses multiple expanding business markets, of all sizes, selling enterprise–grade, as–a–service offerings. Headquartered in Clayton, Missouri, USA, the Company services businesses and organizations throughout North America and Europe.

Media Contact:
Tony Graham
Marketing and Communications 
+1 314-390-6235


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