This tool checks if a website uses a paid Cloudflare subscription. How does it work? Note: Results may vary between Cloudflare data centers, so testing from multiple locations (e.g., via VPN) helps verify the status.
The tool examines the /cdn-cgi/trace endpoint to detect Encrypted Client Hello (ECH) configuration.
Technical details: Cloudflare allows disabling ECH only in paid plans. When ECH is disabled (sni=plaintext), it indicates a paid subscription.