Share of companies with a recorded size, by employees.
No size recorded: 9
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Frequently asked questions
About the Certn data on this page.
How many companies use Certn?
Firmable holds confirmed Certn detections for 106 distinct companies, 20 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Certn?
Zaelab, Relay and Certn are among the most prominent in the current set.
What industries use Certn?
Information technology and services, professional and business services and education and training lead the set, across 18 industries in total.
What size companies use Certn?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Certn users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
20 companies were confirmed in the last 90 days. Last detection 19 September 2026.
