1xx Informational
2xx Success
3xx Redirection
4xx Client Error
5xx Server Error
100
Continue
Server received headers, client should proceed
101
Switching Protocols
Server is switching to different protocol
102
Processing
Server is processing, no response yet (WebDAV)
103
Early Hints
Send preliminary headers before final response
200
OK
Request succeeded
201
Created
Resource successfully created
202
Accepted
Request accepted but not yet processed
203
Non-Authoritative Information
Metadata from third-party copy
204
No Content
Success but no response body
206
Partial Content
Returning partial resource (range request)
301
Moved Permanently
Resource permanently moved to new URL
302
Found
Resource temporarily at different URL
303
See Other
Redirect to different resource (GET)
304
Not Modified
Resource not changed (use cached version)
307
Temporary Redirect
Temporary redirect (preserves HTTP method)
308
Permanent Redirect
Permanent redirect (preserves HTTP method)
400
Bad Request
Malformed request syntax
401
Unauthorized
Authentication required
403
Forbidden
Server refuses to authorize
404
Not Found
Resource not found
405
Method Not Allowed
HTTP method not supported for this resource
406
Not Acceptable
Cannot produce acceptable response
408
Request Timeout
Server timed out waiting for request
409
Conflict
Request conflicts with current state
410
Gone
Resource permanently deleted
411
Length Required
Content-Length header required
413
Payload Too Large
Request body too large
414
URI Too Long
Request URI too long
415
Unsupported Media Type
Content-Type not supported
418
I'm a teapot
Server refuses to brew coffee (Easter egg)
422
Unprocessable Entity
Semantic errors in request
425
Too Early
Request might be replayed (TLS)
426
Upgrade Required
Client must upgrade protocol
429
Too Many Requests
Rate limit exceeded
451
Unavailable For Legal Reasons
Blocked for legal reasons
500
Internal Server Error
Generic server error
501
Not Implemented
Server does not support functionality
502
Bad Gateway
Invalid response from upstream
503
Service Unavailable
Server temporarily unavailable
504
Gateway Timeout
Upstream server timed out
507
Insufficient Storage
Server cannot store representation
511
Network Authentication Required
Network login required

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