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Server Status Checker: Is Your Website Up or Down?

This free server status checker tells you whether a website is online right now. It measures the time for DNS, connection, TLS and the first byte, shows the HTTP status and checks the SSL certificate.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is a Server Status Checker?

A server status checker tests whether a website is online and measures how quickly its server responds. It connects to the site the way a visitor’s browser would, and then reports the outcome: up, down or failing, with the time taken at every step.

It answers the question “is it just me, or is the site down?” and gives you hard numbers about speed. Site owners use it after a deployment, during an outage and to watch for slow responses.

How to Use This Server Status Checker

  1. Enter a website address, for example example.com. If you give no scheme, the tool tries HTTPS first and HTTP as a fallback.
  2. Press Check status.
  3. Read the verdict at the top and the list of checks.
  4. Use the timing table to see where time is spent.

The Timings Explained

StepWhat happensHealthy range
DNS lookupThe name is turned into an IP address.Under 100 ms
TCP connectA connection to the server is opened.Under 150 ms
TLS handshakeThe secure HTTPS session is set up.Under 250 ms
Time to first byteThe server prepares and starts sending the page.Under 600 ms
TotalThe whole request.Depends on page size

All of these steps use the rules of HTTP described in RFC 9110, the HTTP semantics specification.

What the Verdicts Mean

  • UP. The server answered with a normal code, below 400.
  • Up, but the page returns 4xx. The machine runs, but this address is missing or blocked.
  • Server error 5xx. The server is reachable but failing. Check its logs and resources.
  • DOWN. No valid answer arrived. The server may be offline, blocking our address or unreachable from our network.

The checker also reads the SSL certificate and warns you when it expires within 30 days.

If the Site Looks Down

Check the name first

A broken DNS record is a common cause. Inspect it with our DNS lookup tool and confirm the address with the domain to IP lookup.

Test the network path

If the name is fine, run a ping test and a traceroute to find where traffic stops.

Look at the response in detail

When the server answers but behaves oddly, read its answer with the header viewer or follow its path with the redirect checker. Slow pages can also be a weight problem, so try the page size tool.

When to Use It

Run the checker after every deployment, when a customer reports a problem and whenever your monitoring raises an alert. A quick test tells you in seconds whether the issue is on your side or theirs.

Frequently Asked Questions

It resolves the name, connects to the server, starts a secure session for HTTPS, requests the page and records how long each step takes.
It is the time from sending the request until the first byte of the answer arrives. Under 600 milliseconds is good, and over a second suggests a slow server or heavy page.
The server may block our address, a firewall may filter by country, or there may be a network problem between our server and the site. Try again, then check the site from another network.
Certificates expire. The tool warns when fewer than 30 days remain, because an expired certificate makes browsers show a security warning.

Disclaimer: results come from live requests and can change as records and servers change. We cannot guarantee that every answer matches what every visitor sees.