HTTP-Statuscode-Suche
Durchsuche jeden HTTP-Statuscode nach Nummer oder Name und sieh, was er bedeutet. Von 200 OK bis 503 Service Unavailable — die Referenz fürs Debuggen.
61 Codes
Information
- 100Continue
The client should continue with its request; the initial part was received.
- 101Switching Protocols
The server is switching protocols as requested by the client (e.g. to WebSocket).
- 102Processing
The server has received and is processing the request, but no response is available yet (WebDAV).
- 103Early Hints
Returns some response headers early so the client can start preloading resources.
Erfolg
- 200OK
The request succeeded. The meaning depends on the HTTP method used.
- 201Created
The request succeeded and a new resource was created as a result.
- 202Accepted
The request was accepted for processing, but processing is not complete.
- 203Non-Authoritative Information
Returned metadata is from a local or third-party copy, not the origin server.
- 204No Content
The request succeeded but there is no content to return.
- 205Reset Content
The request succeeded; the client should reset the document view.
- 206Partial Content
The server is delivering only part of the resource due to a Range header.
- 207Multi-Status
Conveys information about multiple resources (WebDAV).
- 208Already Reported
Members of a WebDAV binding were already enumerated and are not repeated.
- 226IM Used
The server fulfilled a GET request; the response is an instance manipulation result.
Umleitung
- 300Multiple Choices
The request has more than one possible response; the client should choose one.
- 301Moved Permanently
The resource has permanently moved to a new URL given in the Location header.
- 302Found
The resource is temporarily at a different URL; keep using the original URL.
- 303See Other
The response is found at another URL and should be fetched with GET.
- 304Not Modified
The cached version is still valid; no need to retransmit the resource.
- 307Temporary Redirect
Like 302, but the method and body must not change on the redirected request.
- 308Permanent Redirect
Like 301, but the method and body must not change on the redirected request.
Client-Fehler
- 400Bad Request
The server cannot process the request due to a client error (malformed syntax).
- 401Unauthorized
Authentication is required and has failed or not been provided.
- 402Payment Required
Reserved for future use; sometimes used by APIs for payment/quota limits.
- 403Forbidden
The server understood the request but refuses to authorize it.
- 404Not Found
The server cannot find the requested resource.
- 405Method Not Allowed
The request method is known but not supported for this resource.
- 406Not Acceptable
No content matching the request's Accept headers could be produced.
- 407Proxy Authentication Required
Authentication with a proxy is required before the request can proceed.
- 408Request Timeout
The server timed out waiting for the request.
- 409Conflict
The request conflicts with the current state of the resource.
- 410Gone
The resource is permanently gone and no forwarding address is known.
- 411Length Required
The server requires a Content-Length header, which was missing.
- 412Precondition Failed
A precondition in the request headers was not met.
- 413Payload Too Large
The request body is larger than the server is willing to process.
- 414URI Too Long
The requested URI is longer than the server is willing to interpret.
- 415Unsupported Media Type
The request's media type is not supported by the server.
- 416Range Not Satisfiable
The requested Range cannot be fulfilled.
- 417Expectation Failed
The expectation in the Expect header could not be met.
- 418I'm a Teapot
An April Fools' joke code; the server refuses to brew coffee in a teapot.
- 421Misdirected Request
The request was directed at a server unable to produce a response.
- 422Unprocessable Entity
The request was well-formed but has semantic errors (often validation).
- 423Locked
The resource being accessed is locked (WebDAV).
- 424Failed Dependency
The request failed because it depended on another request that failed (WebDAV).
- 425Too Early
The server is unwilling to risk processing a request that might be replayed.
- 426Upgrade Required
The client should switch to a different protocol given in the Upgrade header.
- 428Precondition Required
The origin server requires the request to be conditional.
- 429Too Many Requests
The client has sent too many requests in a given time (rate limiting).
- 431Request Header Fields Too Large
The header fields are too large for the server to process.
- 451Unavailable For Legal Reasons
The resource is unavailable due to legal demands (e.g. censorship).
Server-Fehler
- 500Internal Server Error
A generic error; the server hit an unexpected condition.
- 501Not Implemented
The server does not support the functionality required to fulfil the request.
- 502Bad Gateway
The server, acting as a gateway, got an invalid response from an upstream server.
- 503Service Unavailable
The server is not ready — often overloaded or down for maintenance.
- 504Gateway Timeout
The server, acting as a gateway, did not get a timely response upstream.
- 505HTTP Version Not Supported
The HTTP version used in the request is not supported by the server.
- 506Variant Also Negotiates
A content-negotiation configuration error on the server.
- 507Insufficient Storage
The server cannot store the representation needed to complete the request (WebDAV).
- 508Loop Detected
The server detected an infinite loop while processing the request (WebDAV).
- 510Not Extended
Further extensions to the request are required for the server to fulfil it.
- 511Network Authentication Required
The client needs to authenticate to gain network access (e.g. captive portal).
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Häufig gestellte Fragen: HTTP-Statuscode-Suche
HTTP-Statuscodes sind dreistellige Zahlen, die ein Server als Ergebnis einer Anfrage zurückgibt. Sie sind nach der ersten Ziffer gruppiert: 1xx Information, 2xx Erfolg, 3xx Umleitung, 4xx Client-Fehler und 5xx Server-Fehler. Den Code zu kennen ist der schnellste Weg zu verstehen, warum sich eine Anfrage so verhalten hat.
4xx-Codes bedeuten, dass das Problem auf Client-Seite liegt — eine falsche URL (404), fehlende Authentifizierung (401) oder zu viele Anfragen (429). 5xx-Codes bedeuten, dass der Server eine gültige Anfrage nicht erfüllen konnte — ein unbehandelter Fehler (500), ein schlechter Upstream (502) oder ein überlasteter/Wartungs-Zustand (503). Fürs Uptime-Monitoring zählen 5xx- (und oft 4xx-)Antworten meist als Ausfall.
Uptimeify prüft deine Sites und APIs und behandelt den zurückgegebenen Statuscode als zentrales Health-Signal — es alarmiert dich bei unerwarteten 4xx/5xx-Antworten und lässt dich genau definieren, welche Codes als „online“ gelten. Schlag einen Code hier nach und konfiguriere dann die richtigen Erwartungen in deinem Monitor.
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