Break DNS
Point the proxied A record at a wrong or unreachable IP, then compare `dig` and `curl` signals.
Disposable domain drill
Practice breaking the web path on purpose.
Use this static page as a clean Cloudflare Pages target while you predict, break, observe, and record real infrastructure failures.
Browser
You
Cloudflare
DNS + edge
Pages
Origin
Loaded
--
Host
--
Build label
lab-v1
Failure rounds
Predict the midpoint before changing anything.
Break the edge layer
Mismatch SSL/TLS mode or block your own IP with a firewall rule. Separate Cloudflare edge behavior from origin behavior.
Break cache freshness
Change visible content, skip purging cache, and compare `cf-cache-status` against what the browser shows.
Break the origin
Disable or misconfigure the hosting target if safe, then predict whether the edge returns a 5xx, cached content, or another signal.
Ambiguous partial failure
Leave one path healthy and one path broken. Narrow the problem by checking DNS, edge, cache, and origin one at a time.
First checks
Commands to run from your terminal.
On a deployed domain, this block updates to the current hostname. Run the checks before and after each break so the delta is obvious.
dig example.com
dig +trace example.com
curl -I https://example.com
curl -sSvo /dev/null https://example.com
curl -I https://example.com/styles.css
curl -I https://example.com/?cachebust=$(date +%s)Incident log