Informational response: the server accepted the request and is still processing it.
100
Continue: the server accepted the request headers and expects the rest of the request.
101
Switching Protocols: the server agreed to change the protocol for this connection.
2xx
Success: the server accepted and handled the request.
200
The request completed successfully.
201
Created: the request succeeded and created a new resource.
204
No Content: the request succeeded, but there is no response body.
3xx
Redirect: the resource is available at another address.
301
Permanent redirect: browsers and search engines should use the new URL.
302
Temporary redirect: this URL points to another location for now.
304
Not Modified: the cached copy is still valid.
4xx
Request-side problem: check the URL, method, headers or permissions.
400
Bad request: the server rejected the syntax or parameters.
401
Authentication is required or the provided credentials were not accepted.
403
Access is forbidden: the server understood the request but refused it.
404
Not found: check the URL path or whether the resource exists.
405
Method not allowed: the URL exists, but the selected method is blocked. Try GET instead of HEAD.
408
Request timeout: the remote server did not receive or process the request in time.
429
Too many requests: the remote server is rate limiting checks from this address.
5xx
Remote server problem: the application or upstream could not handle the request.
500
Internal server error: the remote application failed while processing the request.
502
Bad Gateway: a proxy or upstream server returned an invalid response.
503
Service unavailable: the remote server may be overloaded or under maintenance.
504
Gateway Timeout: a proxy or upstream server did not answer in time.
HTTP Response Checker Online
This server response checker shows how a site answers a request from the InetTools network. Enter an address, choose the method, timeout and redirect limit, then inspect the status code, protocol, headers, response body, redirects and timing in one place.
Use it to check common response codes, secure connection setup, redirect chains, request methods, cache headers and application diagnostics.
✓Check how your website or API responds from the outside in just a couple of clicks.
✓Enter a URL and get the HTTP status code, protocol version and status message.
✓Useful for diagnosing redirects, server errors and misconfigured HTTPS certificates.
✓The tool helps you verify how your site looks for search engines, monitoring systems or users behind a proxy.
✓No installation is required — requests are performed from our server and the result is shown in the browser.
✓For deeper analysis combine this checker with ping, traceroute and other network tools available on the site.
