List of all HTTP Status Codes that every SEO Guy Should Know About
Here is the list of all HTTP Status Codes:
1xx Informational:
- Ø 100 Continue
- Ø 101 Switching Protocols
- Ø 102 Processing (WebDAV; RFC 2518)
2xx Success:
- Ø 200 OK
- Ø 201 Created
- Ø 202 Accepted
- Ø 203 Non-Authoritative Information (since HTTP/1.1)
- Ø 204 No Content
- Ø 205 Reset Content
- Ø 206 Partial Content
- Ø 207 Multi-Status (WebDAV; RFC 4918)
- Ø 208 Already Reported (WebDAV; RFC 5842)
- Ø 226 IM Used
3xx Redirection:
- Ø 300 Multiple Choices
- Ø 301 Moved Permanently
- Ø 302 Found (Temp Moved)
- Ø 303 See Other (since HTTP/1.1)
- Ø 304 Not Modified
- Ø 305 Use Proxy (since HTTP/1.1)
- Ø 306 Switch Proxy
- Ø 307 Temporary Redirect (since HTTP/1.1)
- Ø 308 Permanent Redirect (RFC 7538)
4xx Client Error:
- Ø 400 Bad Request
- Ø 401 Unauthorized
- Ø 402 Payment Required
- Ø 403 Forbidden
- Ø 404 Not Found
- Ø 405 Method Not Allowed
- Ø 406 Not Acceptable
- Ø 407 Proxy Authentication Required
- Ø 408 Request Timeout
- Ø 409 Conflict
- Ø 410 Gone
- Ø 411 Length Required
- Ø 412 Precondition Failed
- Ø 413 Payload Too Large
- Ø 414 URI Too Long
- Ø 415 Unsupported Media Type
- Ø 416 Range Not Satisfiable
- Ø 417 Expectation Failed
- Ø 418 I'm a teapot (RFC 2324)
- Ø 421 Misdirected Request
- Ø 422 Unprocessable Entity (WebDAV; RFC 4918)
- Ø 423 Locked (WebDAV; RFC 4918)
- Ø 424 Failed Dependency (WebDAV; RFC 4918)
- Ø 426 Upgrade Required
- Ø 428 Precondition Required
- Ø 429 Too Many Requests
- Ø 431 Request Header Fields Too Large
- Ø 451 Unavailable For Legal Reasons
5xx Server Error:
- Ø 500 Internal Server Error
- Ø 501 Not Implemented
- Ø 502 Bad Gateway
- Ø 503 Service Unavailable
- Ø 504 Gateway Timeout
- Ø 505 HTTP Version Not Supported
- Ø 507 Insufficient Storage
- Ø 508 Loop Detected
- Ø 510 Not Extended
- Ø 511 Network Authentication Required
Unofficial codes:
- Ø 103 Checkpoint
- Ø 420 Method Failure
- Ø 419 I'm a fox (Smoothwall/Foxwall)
- Ø 420 Enhance Your Calm
- Ø 450 Blocked by Windows Parental Controls (Microsoft)
- Ø 498 Invalid Token (Esri)
- Ø 499 Token Required (Esri)
- Ø 499 Request has been forbidden by antivirus
- Ø 509 Bandwidth Limit Exceeded
- Ø 530 Site is frozen
CloudFlare:
- Ø 520 Unknown Error
- Ø 521 Web Server Is Down
- Ø 522 Connection Timed Out
- Ø 523 Origin Is Unreachable
- Ø 524 A Timeout Occurred
- Ø 525 SSL Handshake Failed
- Ø 526 Invalid SSL Certificate