Insights

Industry Leadership Cellusys consistently ranks #1 in Roaming Steering, Signalling Firewall, SMS Firewall, and Voice Firewall, signaling strong competitive differentiation and a potential upsell path for operators seeking best-in-class security, analytics, and roaming optimization.

Roaming Analytics Recognized as Platinum winner for Best Roaming Analytics and Fraud Platform, plus top position in Kaleido Intelligence vendor hubs, indicating a strong value proposition for operators needing advanced fraud prevention and roaming analytics across multi-network environments.

Security-first A proven focus on signalling security and fraud protection, with real-world deployments (e.g., U Mobile integration) and ongoing awards; potential cross-sell into operators prioritizing network integrity, anti-fraud tooling, and IoT security across 2G to 5G.

Global Scale Solutions serve over 1.35 billion subscribers, showcasing capacity to support large-scale operators and multi-region deployments, presenting opportunities for tier-1 and tier-2 operators pursuing enterprise-grade roaming and security modernization.

Expansion Prospects Recent recognition and partnerships suggest readiness to expand sales through channel momentum and use cases in roaming analytics, fraud prevention, and signaling control; ideal targets include operators seeking consolidated, vendor-agnostic, Diameter-ready steering and firewall capabilities.

Cellusys Tech Stack

Cellusys uses 8 technology products and services including AppNexus, Cloudflare, MySQL, and more. Explore Cellusys's tech stack below.

  • AppNexus
    Advertising
  • Cloudflare
    Content Management System
  • MySQL
    Database
  • Font Awesome
    Font Scripts
  • React
    Javascript Frameworks
  • jQuery UI
    Javascript Libraries
  • reCAPTCHA
    Security
  • Contact Form 7
    Web Platform Extensions

Media & News

Cellusys's Email Address Formats

Cellusys uses at least 1 format(s):
Cellusys Email FormatsExamplePercentage
First.Last@cellusys.comJohn.Doe@cellusys.com
57%
First@cellusys.comJohn@cellusys.com
35%
Last@cellusys.comDoe@cellusys.com
8%

Frequently Asked Questions

What is Cellusys's official website and social media links?

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Cellusys's official website is cellusys.com and has social profiles on LinkedIn.

What is Cellusys's NAICS code?

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Cellusys's NAICS code is 517 - Telecommunications.

How many employees does Cellusys have currently?

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As of July 2026, Cellusys has approximately 142 employees across 5 continents, including EuropeAsiaNorth America. Key team members include Ceo Americas: B. C.Chief Technology Officer: D. M.Chief Financial Officer: N. B.. Explore Cellusys's employee directory with LeadIQ.

What industry does Cellusys belong to?

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Cellusys operates in the Telecommunications industry.

What technology does Cellusys use?

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Cellusys's tech stack includes AppNexusCloudflareMySQLFont AwesomeReactjQuery UIreCAPTCHAContact Form 7.

What is Cellusys's email format?

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Cellusys's email format typically follows the pattern of First.Last@cellusys.com. Find more Cellusys email formats with LeadIQ.

When was Cellusys founded?

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Cellusys was founded in 2004.
Cellusys logo

Cellusys

TelecommunicationsDublin, Ireland51-200 Employees

Cellusys is a telecommunications company that provides mobile network operators with tools to grow revenue, secure networks, and improve subscriber experience. Its technology centers on signaling visibility and control, with a focus on roaming, security, IoT, and analytics. Founded in 2005 and based in Dublin, Ireland, the company has developed systems for roaming steering and signaling firewall and serves more than 1.35 billion subscribers worldwide.

Its customers are mobile operators seeking to manage roaming and security while leveraging analytics for fraud prevention and network optimization. Within the telecommunications industry, Cellusys is positioned as a provider of roaming steering, fraud protection, and security analytics solutions. A notable recent development is the October 2025 partnership with Arelion to offer hosted roaming value-added services.

Section iconCompany Overview

NAICS Code
517 - Telecommunications
Founded
2004
Employees
51-200

Section iconFunding & Financials

  • $10M$25M

    Cellusys's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Cellusys's revenue is estimated to be in the range of $10M$25M

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