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HTTP Status Codes

RFC 911096 codes

Status codes for every HTTP response

Showing 96 of 96 errors

Code	Message	Severity	Tier
100	Continue	INFO	Common	→
101	Switching Protocols	INFO	Common	→
102	Processing	INFO	Common	→
103	Early Hints	INFO	Common	→
200	OK	SUCCESS	Common	→
201	Created	SUCCESS	Common	→
202	Accepted	SUCCESS	Common	→
203	Non-Authoritative Information	SUCCESS	Common	→
204	No Content	SUCCESS	Common	→
205	Reset Content	SUCCESS	Common	→
206	Partial Content	SUCCESS	Common	→
207	Multi-Status	SUCCESS	Common	→
208	Already Reported	SUCCESS	Common	→
226	IM Used	SUCCESS	Common	→
300	Multiple Choices	REDIRECT	Notable	→
301	Moved Permanently	REDIRECT	Notable	→
302	Found	REDIRECT	Notable	→
303	See Other	REDIRECT	Notable	→
304	Not Modified	REDIRECT	Common	→
305	Use Proxy	REDIRECT	Critical	→
307	Temporary Redirect	REDIRECT	Notable	→
308	Permanent Redirect	REDIRECT	Notable	→
400	Bad Request	ERROR	Notable	→
401	Unauthorized	ERROR	Notable	→
402	Payment Required	ERROR	Notable	→
403	Forbidden	ERROR	Notable	→
404	Not Found	ERROR	Notable	→
405	Method Not Allowed	ERROR	Notable	→
406	Not Acceptable	ERROR	Notable	→
407	Proxy Authentication Required	ERROR	Notable	→
408	Request Timeout	ERROR	Notable	→
409	Conflict	ERROR	Notable	→
410	Gone	ERROR	Notable	→
411	Length Required	ERROR	Notable	→
412	Precondition Failed	ERROR	Notable	→
413	Payload Too Large	ERROR	Notable	→
414	URI Too Long	ERROR	Notable	→
415	Unsupported Media Type	ERROR	Notable	→
416	Range Not Satisfiable	ERROR	Notable	→
417	Expectation Failed	ERROR	Notable	→
418	I'm a teapot	ERROR	Common	→
421	Misdirected Request	ERROR	Notable	→
422	Unprocessable Entity	ERROR	Notable	→
423	Locked	ERROR	Notable	→
424	Failed Dependency	ERROR	Notable	→
425	Too Early	ERROR	Notable	→
426	Upgrade Required	ERROR	Notable	→
428	Precondition Required	ERROR	Notable	→
429	Too Many Requests	ERROR	Notable	→
431	Request Header Fields Too Large	ERROR	Notable	→
451	Unavailable For Legal Reasons	ERROR	Notable	→
500	Internal Server Error	SERVER_ERROR	Critical	→
501	Not Implemented	SERVER_ERROR	Critical	→
502	Bad Gateway	SERVER_ERROR	Critical	→
503	Service Unavailable	SERVER_ERROR	Critical	→
504	Gateway Timeout	SERVER_ERROR	Critical	→
505	HTTP Version Not Supported	SERVER_ERROR	Critical	→
506	Variant Also Negotiates	SERVER_ERROR	Critical	→
507	Insufficient Storage	SERVER_ERROR	Critical	→
508	Loop Detected	SERVER_ERROR	Critical	→
510	Not Extended	SERVER_ERROR	Critical	→
511	Network Authentication Required	SERVER_ERROR	Notable	→
306	(Unused / Reserved)	REDIRECT	Critical	→
218	This Is Fine	SUCCESS	Notable	→
419	Page Expired	ERROR	Notable	→
420	Method Failure / Enhance Your Calm	ERROR	Critical	→
430	Request Header Fields Too Large (Shopify) / Security Rejection	ERROR	Notable	→
440	Login Time-Out	ERROR	Notable	→
444	No Response	ERROR	Notable	→
449	Retry With	ERROR	Notable	→
450	Blocked by Windows Parental Controls	ERROR	Critical	→
460	Client Closed Connection Before Load Balancer Response	ERROR	Notable	→
463	Too Many Forwarded IP Addresses	ERROR	Notable	→
464	Incompatible Protocol	ERROR	Notable	→
494	Request Header Too Large	ERROR	Notable	→
495	SSL Certificate Error	ERROR	Notable	→
496	SSL Certificate Required	ERROR	Notable	→
497	HTTP Request Sent to HTTPS Port	ERROR	Notable	→
498	Invalid Token	ERROR	Notable	→
499	Client Closed Request	ERROR	Notable	→
509	Bandwidth Limit Exceeded	ERROR	Notable	→
520	Web Server Returned an Unknown Error	ERROR	Notable	→
521	Web Server Is Down	ERROR	Common	→
522	Connection Timed Out	ERROR	Common	→
523	Origin Is Unreachable	ERROR	Common	→
524	A Timeout Occurred	ERROR	Notable	→
525	SSL Handshake Failed	ERROR	Notable	→
526	Invalid SSL Certificate	ERROR	Notable	→
527	Railgun Listener to Origin Error	ERROR	Critical	→
529	Site Is Overloaded	ERROR	Notable	→
530	Origin DNS Error / Site Is Frozen	ERROR	Notable	→
561	Unauthorized	ERROR	Notable	→
598	Network Read Timeout Error	ERROR	Notable	→
599	Network Connect Timeout Error	ERROR	Notable	→
528	Must Use HTTPS	CLIENT_ERROR	Notable	→
533	Origin Unreachable (DNS failure)	SERVER_ERROR	Critical	→