A breakdown of the 6.2K+ companies running 3CX Phone System.
Top industries
Information technology and services1.9K
Media and telecommunications638
Professional and business services585
Industrial and manufacturing498
Construction and building408
Financial services350
Health and wellness295
Education and training268
No industry recorded: 323
Company size
1–101,142 (23%)
11–501,312 (27%)
51–2501,386 (28%)
251–500502 (10%)
501–1,000216 (4%)
1,001–5,000241 (5%)
5,001–10,00050 (1%)
10,001+72 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 1.3K+
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Frequently asked questions
About the 3CX Phone System data on this page.
How many companies use 3CX Phone System?
Firmable holds confirmed 3CX Phone System detections for 6,224 distinct companies, 4,825 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use 3CX Phone System?
FitzMark, Clinical ink and Centorrino Technologies are among the most prominent in the current set.
What industries use 3CX Phone System?
Information technology and services, media and telecommunications and professional and business services lead the set, across 19 industries in total.
What size companies use 3CX Phone System?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are 3CX Phone System users based?
The United States, Australia, Canada and the Philippines account for most detections, across 13 countries.
How current is this data?
4,825 companies were confirmed in the last 90 days. Last detection 14 October 2026.
