HTTP/3 icon

Websites using HTTP/3

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.

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Every HTTP/3 website we detected in the United States.

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

Sites with at least one personnel LinkedIn profile.

Start with the highest-traffic end of the dataset.

Limit results to HTTP/3 websites on .com domains.

Only sites where an organisation phone number was found.

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Live Websites

Websites Using HTTP/3

A sample of live HTTP/3 sites from our latest crawl, with the other technologies each one runs.

How many websites use HTTP/3?

We found HTTP/3 on 16,297,509 websites in our September 2026 crawl, across 233 countries.

Which countries use HTTP/3 the most?

By number of websites, the top countries are United States (25%, 4,091,692 sites), United Kingdom (4%, 658,588 sites), Italy (3%, 505,468 sites), Cyprus (3%, 486,974 sites) and Germany (3%, 428,358 sites). Together they account for 38% of the 16,297,509 HTTP/3 sites we track. 52% of the sites are in English, and .com is the most used domain ending, on 55% of them.

Where are HTTP/3 websites hosted?

The networks carrying the most HTTP/3 sites are Cloudflare, Inc. (5,955,056 sites), Google LLC (3,615,664 sites) and Hostinger International Limited (1,609,080 sites).

What technologies are used with HTTP/3?

Across the 16,297,509 HTTP/3 sites we track, the technologies most often found alongside it are Cloudflare (47%, 7,620,466 sites), jQuery (45%, 7,266,807 sites), HSTS (43%, 7,003,038 sites), PHP (42%, 6,901,133 sites) and MySQL (37%, 5,965,542 sites).

Deep Dive

Breakdown of HTTP/3 websites

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

TechnologySites
Cloudflare7,620,466
jQuery7,266,807
HSTS7,003,038
PHP6,901,133
MySQL5,965,542
WordPress5,923,209
Bootstrap5,065,524
jQuery Migrate4,434,136
React3,582,077
Cloudflare Browser Insights3,560,083
Lodash3,344,134
LiteSpeed3,291,726
Wix3,260,564
Google Cloud3,131,138
Google Cloud CDN3,105,542
Google Analytics2,999,680
Elementor2,143,994
Yoast SEO2,062,778
LiteSpeed Cache1,933,810
Hostinger1,710,116
Google Tag Manager1,613,267
Cloudflare Bot Management1,535,456
WordPress Block Editor1,508,430
Contact Form 71,361,631
imagesLoaded1,157,844
Same category

Other technologies in Miscellaneous

Miscellaneous technologies run on 36.73% of the websites we track. HTTP/3 ranks #1 of 71, on 87.13% of Miscellaneous sites.

All Miscellaneous technologies

FAQ

Answers drawn from our latest crawl of HTTP/3 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.