- 100 Continue
- 101 Switching Protocols
- 102 Processing (WebDAV; RFC 2518)
- 103 Early Hints (RFC 8297)
- 200 OK
- 201 Created
- 202 Accepted
- 203 Non-Authoritative Information (since HTTP/1.1)
- 204 No Content
- 205 Reset Content
- 206 Partial Content (RFC 7233)
- 207 Multi-Status (WebDAV; RFC 4918)
- 208 Already Reported (WebDAV; RFC 5842)
- 226 IM Used (RFC 3229)
- 300 Multiple Choices
- 301 Moved Permanently
- 302 Found (Previously "Moved temporarily")
- 303 See Other (since HTTP/1.1)
- 304 Not Modified (RFC 7232)
- 305 Use Proxy (since HTTP/1.1)
- 306 Switch Proxy
- 307 Temporary Redirect (since HTTP/1.1)
- 308 Permanent Redirect (RFC 7538)
- 400 Bad Request
- 401 Unauthorized (RFC 7235)
- 402 Payment Required
- 403 Forbidden
- 404 Not Found
- 405 Method Not Allowed
- 406 Not Acceptable
- 407 Proxy Authentication Required (RFC 7235)
- 408 Request Timeout
- 409 Conflict
- 410 Gone
- 411 Length Required
- 412 Precondition Failed (RFC 7232)
- 413 Payload Too Large (RFC 7231)
- 414 URI Too Long (RFC 7231)
- 415 Unsupported Media Type
- 416 Range Not Satisfiable (RFC 7233)
- 417 Expectation Failed
- 418 I'm a teapot (RFC 2324, RFC 7168)
- 421 Misdirected Request (RFC 7540)
- 422 Unprocessable Entity (WebDAV; RFC 4918)
- 423 Locked (WebDAV; RFC 4918)
- 424 Failed Dependency (WebDAV; RFC 4918)
- 426 Upgrade Required
- 428 Precondition Required (RFC 6585)
- 429 Too Many Requests (RFC 6585)
- 431 Request Header Fields Too Large (RFC 6585)
- 451 Unavailable For Legal Reasons (RFC 7725)
- 500 Internal Server Error
- 501 Not Implemented
- 502 Bad Gateway
- 503 Service Unavailable
- 504 Gateway Timeout
- 505 HTTP Version Not Supported
- 506 Variant Also Negotiates (RFC 2295)
- 507 Insufficient Storage (WebDAV; RFC 4918)
- 508 Loop Detected (WebDAV; RFC 5842)
- 510 Not Extended (RFC 2774)
- 511 Network Authentication Required (RFC 6585)