Protocols
HTTP
Return Codes
HTTP return codes
| Code | Message | RFC |
|---|---|---|
| 100 | Continue | RFC7231 |
| 101 | Switching Protocols | RFC7231 |
| 102 | Processing | RFC2518 |
| 103 | Early Hints | RFC8297 |
| 200 | OK | RFC7231 |
| 201 | Created | RFC7231 |
| 202 | Accepted | RFC7231 |
| 203 | Non-Authoritative Information | RFC7231 |
| 204 | No Content | RFC7231 |
| 205 | Reset Content | RFC7231 |
| 206 | Partial Content | RFC7231 |
| 207 | Multi-Status | RFC4918 |
| 208 | Already Reported | RFC5842 |
| 226 | IM Used | RFC3229 |
| 300 | Multiple Choices | RFC7231 |
| 301 | Moved Permanently | RFC7231 |
| 302 | Found | RFC7231 |
| 303 | See Other | RFC7231 |
| 304 | Not Modified | RFC7231 |
| 305 | Use Proxy | RFC7231 |
| 306 | Reserved | RFC7231 |
| 307 | Temporary Redirect | RFC7231 |
| 308 | Permanent Redirect | RFC-reschke-http-status-308-07 |
| 400 | Bad Request | RFC7231 |
| 401 | Unauthorized | RFC7231 |
| 402 | Payment Required | RFC7231 |
| 403 | Forbidden | RFC7231 |
| 404 | Not Found | RFC7231 |
| 405 | Method Not Allowed | RFC7231 |
| 406 | Not Acceptable | RFC7231 |
| 407 | Proxy Authentication Required | RFC7231 |
| 408 | Request Timeout | RFC7231 |
| 409 | Conflict | RFC7231 |
| 410 | Gone | RFC7231 |
| 411 | Length Required | RFC7231 |
| 412 | Precondition Failed | RFC7231 |
| 413 | Request Entity Too Large | RFC7231 |
| 414 | Request-URI Too Long | RFC7231 |
| 415 | Unsupported Media Type | RFC7231 |
| 416 | Requested Range Not Satisfiable | RFC7231 |
| 417 | Expectation Failed | RFC7231 |
| 418 | I'm a teapot | RFC2324 |
| 421 | Misdirected Request | RFC7540 |
| 422 | Unprocessable Entity | RFC4918 |
| 423 | Locked | RFC4918 |
| 424 | Failed Dependency | RFC4918 |
| 425 | Too Early | RFC8470 |
| 426 | Upgrade Required | RFC2817 |
| 428 | Precondition Required | RFC6585 |
| 429 | Too Many Requests | RFC6585 |
| 431 | Request Header Fields Too Large | RFC6585 |
| 451 | Unavailable For Legal Reasons | RFC7725 |
| 500 | Internal Server Error | RFC7231 |
| 501 | Not Implemented | RFC7231 |
| 502 | Bad Gateway | RFC7231 |
| 503 | Service Unavailable | RFC7231 |
| 504 | Gateway Timeout | RFC7231 |
| 505 | HTTP Version Not Supported | RFC7231 |
| 506 | Variant Also Negotiates (Experimental) | RFC2295 |
| 507 | Insufficient Storage | RFC4918 |
| 508 | Loop Detected | RFC5842 |
| 510 | Not Extended | RFC2774 |
| 511 | Network Authentication Required | RFC6585 |
Animal friendly status code responses:
SMTP
https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml
https://en.wikipedia.org/wiki/List_of_SMTP_server_return_codes