- 100 ⟷ Continue
- 101 ⟷ Switching Protocols
- 102 ⟷ Processing
- 200 ⟷ OK
- 201 ⟷ Created
- 202 ⟷ Accepted
- 203 ⟷ Non-authoritative Information
- 204 ⟷ No Content
- 205 ⟷ Reset Content
- 206 ⟷ Partial Content
- 207 ⟷ Multi-Status
- 208 ⟷ Already Reported
- 226 ⟷ IM Used
- 300 ⟷ Multiple Choices
- 301 ⟷ Moved Permanently
- 302 ⟷ Found
- 303 ⟷ See Other
- 304 ⟷ Not Modified
- 305 ⟷ Use Proxy
- 307 ⟷ Temporary Redirect
- 308 ⟷ Permanent Redirect
- 400 ⟷ Bad Request
- 401 ⟷ Unauthorized
- 402 ⟷ Payment Required
- 403 ⟷ Forbidden
- 404 ⟷ Not Found
- 405 ⟷ Method Not Allowed
- 406 ⟷ Not Acceptable
- 407 ⟷ Proxy Authentication Required
- 408 ⟷ Request Timeout
- 409 ⟷ Conflict
- 410 ⟷ Gone
- 411 ⟷ Length Required
- 412 ⟷ Precondition Failed
- 413 ⟷ Payload Too Large
- 414 ⟷ Request-URI Too Long
- 415 ⟷ Unsupported Media Type
- 416 ⟷ Requested Range Not Satisfiable
- 417 ⟷ Expectation Failed
- 418 ⟷ I'm a teapot
- 421 ⟷ Misdirected Request
- 422 ⟷ Unprocessable Entity
- 423 ⟷ Locked
- 424 ⟷ Failed Dependency
- 426 ⟷ Upgrade Required
- 428 ⟷ Precondition Required
- 429 ⟷ Too Many Requests
- 431 ⟷ Request Header Fields Too Large
- 444 ⟷ Connection Closed Without Response
- 451 ⟷ Unavailable For Legal Reasons
- 499 ⟷ Client Closed Request
- 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
- 507 ⟷ Insufficient Storage
- 508 ⟷ Loop Detected
- 510 ⟷ Not Extended
- 511 ⟷ Network Authentication Required
- 599 ⟷ Network Connect Timeout Error