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?
The client must authenticate to gain network access — captive portals, hotel Wi-Fi intercepts.
When to use
Interception proxies, not origin APIs.
Don’t
Your app’s login is 401. Sending 511 from an origin confuses clients.
Live URL
curl -i https://corecoding.com/utilities/http-status.php?code=511
No codes match.
Code use cases