approved certification authorities

MetaSphere QCall is the first vendor-delivered implementation of STIR/SHAKEN to a US Tier 1 service provider. QCall in Call Guardian Authentication Hub provides a complete scalable, in-network and hosted robocalling solution. Metaswitch is a Alianza company.

Phone: +1 415-513-1500
Email: sti-ca@metaswitch.com

BCID is the only industry-led, interoperable, standards-based Rich Call Data (RCD) ecosystem engineered to be secure-by-design and to deliver trusted, branded calls nationwide for enterprise businesses.

Phone: 202-736-3880
Email: info@brandedcallingid.com

With a history in SS7 signaling & interaction with core networks in high TPS environments, GBSD provides exclusive fraud management platforms. STIR SHAKEN services include STI-CA, AS/VS, & CVT.

Phone: +1 817-776-6384
Email: sti-ca@1routegroup.com

Martini Security offers a complete suite of software and services to enable you to become STIR/SHAKEN compliant in hours not months. Our singular focus is to return trust in phone calls by making the deployment and management of STIR/SHAKEN simple and reliable. From simple automated onboarding, and fully automatic certificate lifecycle management using the industry-leading ACME protocol to free and open source signing and verification software, we have everything you need.

Phone: +1 855-445-STIR(7847)
Email: info@martinisecurity.com

netnumber offers a broad set of solutions that solve complex ecosystem challenges and reduce both costs and operational complexity for its customers. netnumber's solutions are designed to support a service provider's day to day operations – providing the data that drives their routing, rating, billing, authentication, and fraud prevention initiatives. Guaranteed Caller® is our comprehensive family of STIR/SHAKEN services.

Phone: +1 302-275-0563
Email: sales@netnumber.com

Neustar Certification Authority services, available via our leading Certified Caller STIR/SHAKEN  service provider solution. We are a pioneer in call authentication, co-author of STIR standards, contributor to SHAKEN framework & exclusive host of ATIS Robocalling Testbed.

Phone: +1 855-898-0036
Email: callerid@team.neustar

Peeringhub.io is a low latency and highly available cloud-based CRM platform for service providers to manage and sell Phone Number Inventory. Our solution is fully compliant with STIR/SHAKEN and deployed with geographically redundancy using both AWS and Google Cloud.

Phone: +1 484-424-9683
Email: ca@peeringhub.io

Ribbon offers real-time identity assurance services as part of its Ribbon Call Trust® portfolio. This includes a complete solution for STIR/SHAKEN (STI-CA, STI-AS/VS, STI-CR, & CVT) available as a cloud-hosted service or deployable on-premises and Reputation Scoring, a cloud-hosted robocall mitigation service.  Together these services help service providers restore their customer’s trust in the phone call. 

Phone: +1 866-949-7226
Email: Rbbn_InsideSales@rbbn.com

Sansay offers the highest performance STIR/SHAKEN solutions complete with Certificate Authority and Database. Free evaluations for Service Providers with or without Sansay SBC's can be deployed in 2 hours or less.

Phone: +1 858-754-2200
Email: sales@sansay.com

Somos is dedicated to fostering trust and transparency in communications through innovative solutions. As a leading registry management and data solutions company, recognized for its roles as the Toll-Free Number Administrator (TFNA), North American Numbering Plan Administrator (NANPA) and the Reassigned Numbers Database Administrator (RNDA), Somos offers a comprehensive suite of services designed to manage and protect telephone number data. We are committed to contributing to the development of foundational elements that will enhance trust in phone calls and text messages.

Phone: 844.HEY.SOMOS
Email: connect@somos.com

TransNexus provides a complete STIR/SHAKEN solution (STI-CA, STI-CR, STI-AS/STI-VS, STI-CPS, and CVT) available in the cloud or on-premises. Certificates with validities from 1 to 365 days are available via a web portal or REST API. Out-of-Band SHAKEN support is included.

Phone: +1 404-526-6060
Email: ca@transnexus.com

The Telonium Certificate Authority service is designed for small to mid-size telecommunication service providers to comply with STIR/SHAKEN while reducing the costs associated with the compliance. With proven technology and low-latency infrastructure, Telonium is offering an end-to-end solution, from certificate issuance to real-time call authentication (STI-AS) and verification (STI-VS) services. 

Phone: 404-973-2400
Email: sti-ca@telonium.com