Find out which web server, operating system, CDN and backend technology a website runs on.
How to use Website Server & OS Checker
Enter the website address.
Click Detect technology.
Read the server details and the grouped list of detected technologies.
Worked example
Checking wordpress.org shows Nginx on Linux with WordPress and Google Tag Manager. A site showing Cloudflare as the server hides its origin server behind the CDN.
Why is the version hidden?
Well-configured servers hide their version numbers so attackers cannot target known weaknesses. The operating system is then inferred from other clues.
Is detection always right?
It relies on tell-tale headers, file paths and tags. Sites can remove or fake these, so treat the results as strong hints rather than proof.
Put this guide into practice
Website Server & OS Checker — Find out which web server, operating system, CDN and backend technology a website runs on.