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Websites Using Cloudflare

Cloudflare is a global CDN, security and performance provider fronting a large share of the web.

The source-code fingerprint

Cloudflare Web Analytics injects a beacon from static.cloudflareinsights.com; this footprint catches sites using that feature.

Likely false positives: Only detects sites running Cloudflare's analytics beacon — many Cloudflare-proxied sites won't include it.

Example websites using Cloudflare

These domains all contain the cloudflareinsights.com fingerprint in their homepage source right now. A match is a verified substring of the live page, so confidence is high — the false positives noted above are the main caveat.

• medium.com ...ge=e,c())}}}})();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• tinyurl.com ...defer></script>\n \n \n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.tandfonline.com ... for tandfonline.com -->\n\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v52afc6f149f6479b8c77fa569edb0118168176410881...
• www.discogs.com ...ets/main-o4g5wToT.css"></script><script src="https://static.cloudflareinsights.com/beacon.min.js" defer="" data-cf-beacon="{&quot;token&quot;:...
• openai.com ...K4SN" as="script"/><link rel="preload" href="https://static.cloudflareinsights.com/beacon.min.js" as="script"/><title>OpenAI</title><meta name...
• payhip.com ...<!--cookie-consent-bar-->\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• onlinelibrary.wiley.com ...ript>\n\n \n\n\n <script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• www.thingiverse.com ..."></script>\n\n \n <script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• www.nist.gov ...ge=e,c())}}}})();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.prnewswire.com ...ge=e,c())}}}})();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• csrc.nist.gov ...ge=e,c())}}}})();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• substack.com ...Analytics -->\n <script defer src="https://static.cloudflareinsights.com/beacon.min.js" data-cf-beacon='{"token": "216309cffb464db4b...
• www.epi.org ...-requirejs-js"></script>\n\t<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.pnas.org ...1745933903787.css">\r\n\t<script defer\r\n\t\t\tsrc="https://static.cloudflareinsights.com/beacon.min.js/v652eace1692a40cfa3763df669d7439c163907971719...
• developers.cloudflare.com ...div> </div> </div> </div> <script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.perplexity.ai ...<main id="root"></main>\n <script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• www.ucas.com ...2Srs11b0C26"></script>\n\n <script defer src="https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451...
• www.britannica.com ...bc-fixed-dialogue"></div>\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• nvd.nist.gov ...l-decode.min.js"></script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451...
• www.smithsonianmag.com ...javascript"></script>\n \n\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• notes.io ...');\n</script>\n \n</div>\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...
• www.l214.com ...behavior: none;}</style>\n\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.africatechsummit.com ...ady_queue[d])}();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• haveibeenpwned.com ...EhLoC/3XaxMm4="></script>\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• www.jupiterbroadcasting.com ...;V26hqIA="></script>\n\n <script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• donorbox.org ...ge=e,c())}}}})();</script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451...
• opencollective.com ...s.exclusions.js"></script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• vlang.io ...l-decode.min.js"></script><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• blog.cloudflare.com ...Wc-.js"></script> </html><script defer src="https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644...
• diveintomark.org ...-loader.min.js\n</script>\n\n<script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917601...

Showing 30 of 5,245,359 matching sites. Open the full ranked list, inspect the matched source, and export the domain list →

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How this works

SearchWebCode indexes the raw HTML, CSS and JavaScript source of public web pages. To find sites using Cloudflare we match the literal fingerprint cloudflareinsights.com — the code Cloudflare ships — against that index, then verify each match against the raw source. Counts reflect the current index (97,179,967 domains, refreshed monthly, last built July 2026) and grow as we scale toward the whole web. Run the search yourself to see every match, view the full page source for any result, filter by TLD or regex, and export the domain list.