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?
Old Twitter API rate-limit code, a riff on Demolition Man. Replaced by 429.
When to use
Reading old integrations. Never mint new 420s.
Don’t
Use 429 Too Many Requests.
Live URL
curl -i https://corecoding.com/utilities/http-status.php?code=420
No codes match.
Code use cases