Is This Website Built on Cloudflare? Free Cloudflare Checker
Not sure if a site is built on Cloudflare? Paste the URL below and Laikastack confirms it in seconds – and shows you the rest of the stack too.
How to tell if a website uses Cloudflare
Laikastack checks all of these automatically, so you don't have to dig through page source.
- cf-ray response header
- Cloudflare nameservers
Why it matters
For web designers: knowing where a site is hosted shows you what you're inheriting before a project starts. For sales teams: hosting and CDN choices are strong qualifying signals for infrastructure, security and performance offers.
About Cloudflare
Cloudflare sits in front of sites to deliver, secure and speed them up.
Frequently asked questions
How can I tell if a website uses Cloudflare?
Paste the URL into the checker above. Laikastack inspects the markup, scripts, headers and signatures and confirms whether Cloudflare is present, with a confidence score.
Is the Cloudflare checker free?
Yes – single-site checks are free and need no signup.
Can it detect more than just the platform?
Yes. Alongside the platform you get the full stack – CMS, theme, plugins, frameworks, analytics and hosting.