A breakdown of the 6.6M+ companies running HTTP/3.
Top industries
Professional and business services711K+
Art, sports and recreation614K+
Construction and building506K+
Retail trade476K+
Health and wellness440K+
Information technology and services360K+
Hospitality and travel352K+
Industrial and manufacturing352K+
No industry recorded: 1.1M+
Company size
1–101,403,634 (55%)
11–50642,235 (25%)
51–250365,140 (14%)
251–50076,798 (3%)
501–1,00015,537 (1%)
1,001–5,00022,280 (1%)
5,001–10,0002,354 (<1%)
10,001+2,254 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 4M+
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Frequently asked questions
About the HTTP/3 data on this page.
How many companies use HTTP/3?
Firmable holds confirmed HTTP/3 detections for 6,605,024 distinct companies, 4,829,633 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use HTTP/3?
Cresset, Intellia Therapeutics, Inc. and Mirum Pharmaceuticals Inc. are among the most prominent in the current set.
What industries use HTTP/3?
Professional and business services, art, sports and recreation and construction and building lead the set, across 19 industries in total.
What size companies use HTTP/3?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are HTTP/3 users based?
The United States, Australia, Canada and Indonesia account for most detections, across 13 countries.
How current is this data?
4,829,633 companies were confirmed in the last 90 days. Last detection 20 September 2026.
