Data services company Neustar has joined forces with TELUS this week to fight caller ID spoofing. The Canadian telecommunications company recently finalized a test of Neustar’s Certified Caller software suite.

The trial was done per the Canadian Radio-Television and Telecommunications Commission (CRTC) mandate that telecommunications service providers deploy caller ID authentication and verification for voice over internet (VoIP) calls to reduce illegal caller ID spoofing. TELUS tested Neustar’s Certified Caller in its NFV lab environment using the STIR/SHAKEN protocol.

STIR, which stands for Secure Telephony Identity Revisited, is a set of technical standards to certify the identity of originating calls. SHAKEN, which stands for Signature-based Handling of Asserted information using toKENs, is a framework that focuses on implementing STIR within IP-based service provider networks. The industry sees STIR/SHAKEN as the most feasible measure of trust in the phone number and name displayed during an incoming call.

“We fully support the adoption of STIR/SHAKEN as a means to restore trust in calls,” said Neustar General Manager and Vice President of Caller ID Solutions James Garvert. “Neustar’s Certified Caller is a full STIR/SHAKEN solution that enables service providers to meet the standards to authenticate and verify the caller telephone identity between originating and terminating carriers and detect and warn subscribers of spoofing.”

Founded in 1999 and headquartered in Virginia, Neustar combines identity and data to offer businesses a range of marketing, risk, communications, security, and registry services. Among the company’s clients are Google, Tesco, Ticketmaster, Allstate, and Pinterest.

Neustar demoed its marketing solution at FinovateSpring 2016. Earlier this year, the company acquired fraud solutions provider TrustID. Neustar is a public company, listed on the NYSE under the ticker “NSR.” The company has a market capitalization of $1.87 billion. Charles Gottdiener is president and CEO.