Is it down or just me?
Check if a website is down for everyone. Our server loads the address and shows the status code, response time, and final URL.
- HTTP status
- Response time
- HTTPS
- Final URL
DataDad Uptime
Monitor this URL for free
A one-time check tells you about now. We check your website every five minutes and alert you by email when it goes down.
What the status code means
The checker counts 2xx and 3xx answers as up. It counts 4xx answers as an error for that page, because the server still answers. It counts 5xx answers, timeouts, and failed connections as down.
| Code | Name | What it means |
|---|---|---|
| 200 | OK | The page loaded normally. |
| 301, 308 | Permanent redirect | The page moved. The checker follows it to the new address. |
| 302, 307 | Temporary redirect | The server sends visitors to another address for now. |
| 403 | Forbidden | The server refused the request. Some sites block automated checks. |
| 404 | Not found | The server works, but this page does not exist. |
| 429 | Too many requests | The server limits how often one address can visit. |
| 500 | Internal server error | The website's code or configuration failed. |
| 502, 504 | Bad gateway, gateway timeout | A proxy or load balancer could not get an answer from the server behind it. |
| 503 | Service unavailable | The server is overloaded or in maintenance. |
| 521, 522, 523 | Cloudflare origin errors | Cloudflare works, but the website's own server is off or does not answer. |
| 525, 526 | Cloudflare SSL errors | The secure connection between Cloudflare and the website's server failed. |
Questions
How does the website down checker work?
Our server looks up the domain, then sends one GET request to the address. It follows up to five redirects and waits up to eight seconds. It reports the final HTTP status code, the response time, the final URL, and whether the connection uses HTTPS. It does not download the page content.
Why is a website down only for me?
If the site works for our server but not for you, the problem is usually near you. Common causes are an old DNS record in your computer or router, a VPN or firewall, a browser extension, your internet provider, or a block for your country or IP address.
What can I do if a site is up but does not load for me?
Reload the page without the cache. Try a private window or another browser. Turn off your VPN and ad blocker. Try mobile data instead of Wi-Fi. Restart your router, or clear your DNS cache. If nothing works, wait a few minutes and check again.
What do HTTP status codes mean?
2xx codes mean success. 3xx codes are redirects to another address. 4xx codes mean the server answered but refused the request or could not find the page. 5xx codes mean the server or a proxy in front of it failed. Codes from 520 to 526 come from Cloudflare when it cannot reach the website's own server.
Why does a site show 403 or 429 in the checker?
Some websites block automated requests or limit how often one address can visit. A 403 or 429 means the server is running but refused our check. The site can still work in your browser.
Do you save the addresses I check?
No. We use the address for one check and do not save it. We count checks per IP address for a short time to prevent abuse.
How can I know when my website goes down?
Use DataDad Uptime. It checks your website every five minutes and sends an alert when it goes down and when it comes back. It is free and needs no credit card.