HTTP Status Codes cheat sheet

HTTP Status Codes cheat sheet. Explore our ultimate quick reference for HTTP Status Codes.

Discover a comprehensive HTTP Status Code Cheat Sheet detailing official and unofficial status codes with clear descriptions and usage contexts. Perfect for developers and IT professionals seeking quick references and insights into both commonly used and obscure HTTP responses. Stay informed and efficient with this essential guide to understanding server-client interactions.

Official HTTP Status Codes

Status code Ranges

Code Description
1xx Informational response – the request was received, continuing process
2xx Successful – the request was successfully received, understood, and accepted
3xx Redirection – further action needs to be taken in order to complete the request
4xx Client error – the request contains bad syntax or cannot be fulfilled
5xx Server error – the server failed to fulfil an apparently valid request

More information

1xx Informational Response

Code Description
100 Continue
101 Switching Protocols
102 Processing (WebDAV; RFC 2518)
103 Early Hints (RFC 8297)

2xx Success

Code Description
200 OK
201 Created
202 Accepted
203 Non-Authoritative Information (since HTTP/1.1)
204 No Content
205 Reset Content
206 Partial Content
207 Multi-Status (WebDAV; RFC 4918)
208 Already Reported (WebDAV; RFC 5842)
226 IM Used (RFC 3229)

3xx Redirection

Code Description
300 Multiple Choices
301 Moved Permanently
302 Found (Previously "Moved temporarily")
303 See Other (since HTTP/1.1)
304 Not Modified
305 Use Proxy (since HTTP/1.1)
306 Switch Proxy
307 Temporary Redirect (since HTTP/1.1)
308 Permanent Redirect

4xx Client Errors 2/1

Code Description
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

4xx Client Errors 2/2

Code Description
414 URI Too Long
415 Unsupported Media Type
416 Range Not Satisfiable
417 Expectation Failed
418 I'm a teapot (RFC 2324, RFC 7168)
421 Misdirected Request
422 Unprocessable Content
423 Locked (WebDAV; RFC 4918)
424 Failed Dependency (WebDAV; RFC 4918)
425 Too Early (RFC 8470)
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)

5xx Server Errors

Code Description
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)

Unofficial HTTP Status Codes

Not Specified by Any Standard

Code Description
218 This is fine (Apache HTTP Server)
419 Page Expired (Laravel Framework)
420 Method Failure (Spring Framework)
420 Enhance Your Calm (Twitter)
430 Request Header Fields Too Large (Shopify)
430 Shopify Security Rejection (Shopify)
450 Blocked by Windows Parental Controls (Microsoft)
498 Invalid Token (Esri)
499 Token Required (Esri)
509 Bandwidth Limit Exceeded (Apache Web Server/cPanel)
529 Site is overloaded
530 Site is frozen
530 Origin DNS Error (Shopify)
540 Temporarily Disabled (Shopify)
598 Network read timeout error (Informal convention)
599 Network Connect Timeout Error
783 Unexpected Token (Shopify)


Code Description
520 Web Server Returned an Unknown Error
521 Web Server Is Down
522 Connection Timed Out
523 Origin Is Unreachable
524 A Timeout Occurred
525 SSL Handshake Failed
526 Invalid SSL Certificate
527 Railgun Error (obsolete)
530 Error 530 is returned along with a 1xxx error.

AWS Elastic Load Balancing

Code Description
000 Returned with an HTTP/2 GOAWAY frame if the compressed length of any of the headers exceeds 8K bytes or if more than 10K requests are served through one connection.
460 Client closed the connection with the load balancer before the idle timeout period elapsed. Typically, when client timeout is sooner than the Elastic Load Balancer's timeout.
463 The load balancer received an X-Forwarded-For request header with more than 30 IP addresses.
464 Incompatible protocol versions between Client and Origin server.
561 Unauthorized (An error around authentication returned by a server registered with a load balancer. A listener rule is configured to authenticate users, but the identity provider (IdP) returned an error code when authenticating the user.)


Code Description
444 No Response
494 Request header too large
495 SSL Certificate Error
496 SSL Certificate Required
497 HTTP Request Sent to HTTPS Port
499 Client Closed Request

Microsoft IIS

Code Description
440 Login Time-out
449 Retry With
451 Redirect (Exchange ActiveSync)