How does the website down checker work?

It sends a controlled public HTTP request from the Netest server, follows safe redirects and reports whether a response was received, along with status, timing and the final URL.

Does an HTTP 404 or 500 mean the website is down?

No. A 4xx or 5xx response proves that an HTTP server answered, although a page or application may be unavailable. The checker separates a responding error from a connection failure.

Why can the result differ from my browser?

The check runs from the Netest server. DNS views, CDN location, firewalls, rate limits, VPNs and local network paths can make a website appear different from another location.

Can this check private or intranet websites?

No. Private, loopback, local, multicast and reserved destinations are blocked. Use local monitoring or command-line checks for internal services.

Website availability

Website Down Checker

Check whether a public website is responding and review its HTTP status, response time, redirects, and final destination from the Netest server.

Live HTTP responseConfirms whether a public web server answered.

Response-time checkSee how long the observed response took.

Redirect trackingReview the final URL and safe redirect path.

Check a website

Enter a domain or full HTTP/HTTPS URL. The check follows safe redirects and uses a lightweight request.

HTTP / HTTPS

What does “website down” mean?

A website can fail at several layers: DNS may not resolve, a TCP connection may be refused, TLS may fail, a server may time out, or an application may return an error page. This checker focuses on the public HTTP path and explains which kind of result it received.

A successful response means that an HTTP endpoint answered from the Netest server. It does not guarantee that every page, API, region, device or logged-in user is healthy.

How to troubleshoot a website outage

1. Confirm the exact URL

Check the hostname, HTTPS scheme, path, spelling and whether the canonical site redirects to another hostname.

2. Compare the status

A 2xx response is successful, a 3xx response redirects, 4xx means the server rejected the request, and 5xx indicates server-side failure.

3. Test another layer

Use DNS Lookup, SSL Checker, HTTP Header Checker or Ping / Latency Checker to isolate the failing layer.

4. Compare locations

Run a local check and compare it with this server-side result. CDNs, geofencing, split DNS, VPNs and firewalls can create regional differences.