家公用事业 ToolsHTTP 状态代码参考HTTP 状态代码参考完整的、可搜索的 HTTP 状态代码（1xx 到 5xx）目录以及常见的非官方代码。每个条目都包含简短的摘要、完整的描述、使用指南和 RFC 参考。按类别过滤，按代码或名称搜索。100% 客户端 · 没有数据离开您的浏览器All (67)All (67)1xx Informational(4)1xx Informational2xx Success(10)2xx Success3xx Redirection(8)3xx Redirection4xx Client Error(30)4xx Client Error5xx Server Error(15)5xx Server Error100ContinueInitial part of a request has been received and the client should continue.101Switching ProtocolsServer is switching protocols as requested in the Upgrade header.102ProcessingThe server has received and is processing the request, but no response is available yet (WebDAV).103Early HintsLets the user agent start preloading resources while the server prepares the final response.200OKRequest succeeded. The response body contains the requested data.201CreatedRequest succeeded and a new resource was created.202AcceptedRequest accepted for processing but not yet completed.203Non-Authoritative InformationReturned metadata is from a copy or third party, not the origin server.204No ContentRequest succeeded but there is no content to return.205Reset ContentTells the user agent to reset the document that sent this request.206Partial ContentServer is delivering only part of the resource due to a Range header.207Multi-StatusConveys multiple status codes for multiple independent operations (WebDAV).208Already ReportedMembers of a DAV binding were already enumerated in a previous part of the response (WebDAV).226IM UsedServer has fulfilled a GET request and the response is a representation of the result of one or more instance manipulations.300Multiple ChoicesThe request has more than one possible response. The user agent should choose one.301Moved PermanentlyThe resource has permanently moved to the URL in the Location header.302FoundResource is temporarily at a different URL (Location header).303See OtherClient should retrieve the resource at the Location URL using GET.304Not ModifiedResource has not changed since the version specified by the request's conditional headers.305Use ProxyDeprecated. The requested resource must be accessed through a proxy.307Temporary RedirectSame as 302 but the HTTP method must be preserved.308Permanent RedirectSame as 301 but the HTTP method must be preserved.400Bad RequestServer cannot process the request due to a client error (malformed syntax, invalid framing).401UnauthorizedAuthentication is required and has failed or not been provided.402Payment RequiredReserved for future use; sometimes used by payment-gated APIs.403ForbiddenServer understood the request but refuses to authorize it.404Not FoundServer cannot find the requested resource.405Method Not AllowedRequest method is known but not supported by the target resource.406Not AcceptableThe resource cannot generate content matching the client's Accept header.407Proxy Authentication RequiredClient must authenticate itself with the proxy first.408Request TimeoutServer timed out waiting for the request from the client.409ConflictRequest conflicts with the current state of the resource.410GoneResource is permanently no longer available, with no forwarding address.411Length RequiredServer requires a Content-Length header but the request did not provide one.412Precondition FailedOne or more conditions in request headers (e.g., If-Match) evaluated to false.413Payload Too LargeRequest body is larger than the server is willing or able to process.414URI Too LongRequest URI is longer than the server is willing to interpret.415Unsupported Media TypeServer refuses the request because the payload format is unsupported.416Range Not SatisfiableRange specified in the Range header cannot be fulfilled.417Expectation FailedServer cannot meet the requirements of the Expect request header.418I'm a TeapotEaster-egg status code from RFC 2324 (Hyper Text Coffee Pot Control Protocol).421Misdirected RequestRequest was directed at a server unable to produce a response for the combination of scheme and authority.422Unprocessable EntityRequest is well-formed but semantically invalid.423LockedResource being accessed is locked (WebDAV).424Failed DependencyRequest failed because it depended on another request that failed.425Too EarlyServer is unwilling to risk processing a request that might be replayed.426Upgrade RequiredServer refuses to perform the request using the current protocol but might if the client upgrades.428Precondition RequiredOrigin server requires the request to be conditional.429Too Many RequestsClient has sent too many requests in a given amount of time (rate limiting).431Request Header Fields Too LargeRequest headers are too large for the server to process.451Unavailable For Legal ReasonsResource is unavailable due to a legal demand (e.g., government censorship).499Client Closed RequestNon-standard nginx code: the client closed the connection before the server could finish responding.500Internal Server ErrorGeneric error message when no more specific message is suitable.501Not ImplementedServer does not recognize the request method or lacks the ability to fulfill it.502Bad GatewayServer, acting as a gateway, received an invalid response from the upstream server.503Service UnavailableServer is currently unable to handle the request due to overload or maintenance.504Gateway TimeoutGateway/proxy did not receive a timely response from the upstream server.505HTTP Version Not SupportedServer does not support the HTTP protocol version used in the request.506Variant Also NegotiatesServer has an internal configuration error with transparent content negotiation.507Insufficient StorageServer is unable to store the representation needed to complete the request (WebDAV).508Loop DetectedServer detected an infinite loop while processing the request (WebDAV).510Not ExtendedFurther extensions to the request are required for the server to fulfill it.511Network Authentication RequiredClient needs to authenticate to gain network access.520Web Server Returned Unknown ErrorCloudflare-specific: the origin server returned an unexpected response.521Web Server Is DownCloudflare-specific: the origin server refused the connection.522Connection Timed OutCloudflare-specific: connection to the origin server timed out.524A Timeout OccurredCloudflare-specific: origin took too long to send a response.