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Websites using Varnish

Varnish is a reverse caching proxy.

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1M live Varnish sites, ready to export.

That's how many Varnish websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

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Every Varnish website we detected in Denmark.

Only sites where a business, company-hosted email was found.

Sites with at least one business LinkedIn profile.

Start with the highest-traffic end of the dataset.

Limit results to Varnish websites on .com domains.

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Versions

Which Varnish versions are most used?

We could read a version number on 10% of Varnish sites. Of those, the most common are Varnish 6, on 60,165 sites, Varnish 7, on 34,546 sites and Varnish 5, on 12,335 sites.

56% on v6
Versions detected
3
Sites with a version
107,046
Share of sites by version
v6 56% v7 32% v5 12%

How many websites use Varnish?

We found Varnish on 1,025,007 websites in our September 2026 crawl, across 208 countries.

Which countries use Varnish the most?

By number of websites, the top countries are Denmark (13%, 131,367 sites), United States (8%, 80,684 sites), Sweden (7%, 72,096 sites), Germany (7%, 69,368 sites) and Netherlands (6%, 58,689 sites). Together they account for 40% of the 1,025,007 Varnish sites we track. 44% of the sites are in English, and .com is the most used domain ending, on 35% of them.

Where are Varnish websites hosted?

The networks carrying the most Varnish sites are Fastly, Inc. (389,959 sites), One.com A/S (337,740 sites) and Amazon.com, Inc. (82,726 sites).

What technologies are used with Varnish?

Across the 1,025,007 Varnish sites we track, the technologies most often found alongside it are jQuery (45%, 464,457 sites), Apache HTTP Server (39%, 394,849 sites), Fastly (36%, 372,865 sites), PHP (33%, 338,394 sites) and HSTS (29%, 294,444 sites).

Deep Dive

Breakdown of Varnish websites

What else they run, plus their language, hosting network, domain extension and country.

FAQ

Answers drawn from our latest crawl of Varnish websites. Anything else, email us and we will look it up.

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.