Look up a status, pick the right one for an API, or hit a live endpoint that actually returns it. Add ?code=418 to this URL and the response is that status — useful for curl, interceptors, and “what does my client do on 503?” Nothing here phones home except the Try it fetch to this same page.
Which class?
Cloudflare could not complete TLS with the origin.
When to use
Cipher/protocol mismatch, origin cert problems in Full (strict) mode.
Don’t
Browser-to-Cloudflare TLS errors are different; this is Cloudflare-to-origin.
Live URL
curl -i https://corecoding.com/utilities/http-status.php?code=525
No codes match.
Code use cases