A breakdown of the 385 companies running Microsoft ISA Server.
Top industries
Information technology and services61
Industrial and manufacturing39
Health and wellness38
Professional and business services32
Financial services30
Media and telecommunications30
Education and training26
Construction and building22
No industry recorded: 32
Company size
1–1045 (15%)
11–5059 (19%)
51–25071 (23%)
251–50040 (13%)
501–1,00018 (6%)
1,001–5,00045 (15%)
5,001–10,00013 (4%)
10,001+19 (6%)
Share of companies with a recorded size, by employees.
No size recorded: 75
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Frequently asked questions
About the Microsoft ISA Server data on this page.
How many companies use Microsoft ISA Server?
Firmable holds confirmed Microsoft ISA Server detections for 385 distinct companies, 378 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Microsoft ISA Server?
Gold Eagle Company, OrbusNeich Medical Company Ltd. and PT.Adicipta Inovasi Teknologi are among the most prominent in the current set.
What industries use Microsoft ISA Server?
Information technology and services, industrial and manufacturing and health and wellness lead the set, across 18 industries in total.
What size companies use Microsoft ISA Server?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Microsoft ISA Server users based?
The United States, Australia, Canada and New Zealand account for most detections, across 13 countries.
How current is this data?
378 companies were confirmed in the last 90 days. Last detection 14 October 2026.
