Fastly checker
Fastly is a fast, developer friendly CDN with real time configuration. Many media and SaaS sites use it. Enter any website below to check whether it uses Fastly. The check is free and needs no signup.
Enter a website address and press Scan.
Detection reads the page HTML, response headers and cookies. Tools that load later or run only on the server can be missed.
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How we detect Fastly
We look for an x-fastly-request-id header, an x-served-by header that starts with cache-, or a server header that says Fastly.
Detection reads what the page sends to a visitor. A site can hide Fastly, or use it only on the server, and then we can't see it.