A breakdown of the 77 companies running OpenSIPS SIP Server.
Top industries
Information technology and services36
Media and telecommunications21
Professional and business services7
Education and training2
Industrial and manufacturing2
Agriculture, forestry and fishing1
Art, sports and recreation1
Financial services1
No industry recorded: 3
Company size
1–107 (12%)
11–5013 (22%)
51–25019 (32%)
251–5008 (14%)
501–1,0001 (2%)
1,001–5,0004 (7%)
5,001–10,0001 (2%)
10,001+6 (10%)
Share of companies with a recorded size, by employees.
No size recorded: 18
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
3.5.95
3.6.64
3.6.74
2.4.73
3.2.73
3.3.103
3.4.133
3.4.153
1.6.4-2-notls2
2.2.42
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Frequently asked questions
About the OpenSIPS SIP Server data on this page.
How many companies use OpenSIPS SIP Server?
Firmable holds confirmed OpenSIPS SIP Server detections for 77 distinct companies, 77 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use OpenSIPS SIP Server?
CallTower Inc., SpectrumVoIP and Great Healthworks are among the most prominent in the current set.
What industries use OpenSIPS SIP Server?
Information technology and services, media and telecommunications and professional and business services lead the set, across 12 industries in total.
What size companies use OpenSIPS SIP Server?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are OpenSIPS SIP Server users based?
The United States, Australia, Canada and the Philippines account for most detections, across 13 countries.
How current is this data?
77 companies were confirmed in the last 90 days. Last detection 14 October 2026.
