A breakdown of the 2.7K+ companies running Asterisk PBX.
Top industries
Information technology and services1.1K+
Media and telecommunications462
Professional and business services250
Education and training120
Industrial and manufacturing105
Financial services96
Construction and building85
Health and wellness76
No industry recorded: 178
Company size
1–10488 (25%)
11–50554 (28%)
51–250545 (28%)
251–500161 (8%)
501–1,00057 (3%)
1,001–5,00098 (5%)
5,001–10,00024 (1%)
10,001+39 (2%)
Share of companies with a recorded size, by employees.
No size recorded: 801
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
20.6.0~dfsg+~cs6.13.40431414-2build517
1.8.32.311
18.10.0~dfsg+~cs6.10.40431411-28
20.21.07
16.2.1~dfsg-2ubuntu16
13.18.3~dfsg-1ubuntu45
13.23.15
16.30.05
18.26.45
2.8.05
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Frequently asked questions
About the Asterisk PBX data on this page.
How many companies use Asterisk PBX?
Firmable holds confirmed Asterisk PBX detections for 2,767 distinct companies, 2,511 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Asterisk PBX?
Clearwave Fiber, AireSpring and the wnet group are among the most prominent in the current set.
What industries use Asterisk PBX?
Information technology and services, media and telecommunications and professional and business services lead the set, across 19 industries in total.
What size companies use Asterisk PBX?
Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.
Where are Asterisk PBX users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
2,511 companies were confirmed in the last 90 days. Last detection 14 October 2026.
