A breakdown of the 921 companies running Central Index.
Top industries
Construction and building131
Professional and business services96
Art, sports and recreation70
Health and wellness59
Industrial and manufacturing59
Transport46
Financial services44
Media and telecommunications44
No industry recorded: 179
Company size
1–10116 (37%)
11–50112 (36%)
51–25072 (23%)
251–5008 (3%)
501–1,0001 (<1%)
1,001–5,0003 (1%)
10,001+1 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 608
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Frequently asked questions
About the Central Index data on this page.
How many companies use Central Index?
Firmable holds confirmed Central Index detections for 921 distinct companies, 920 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Central Index?
Alternative Family Services, American College Of Osteopathic Family Physicians (Acofp) and Cook Commercial are among the most prominent in the current set.
What industries use Central Index?
Construction and building, professional and business services and art, sports and recreation lead the set, across 19 industries in total.
What size companies use Central Index?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Central Index users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
920 companies were confirmed in the last 90 days. Last detection 13 October 2026.
