Searchmetrics Site Experience crawl checks for a number of 300- & 400-type errors. Below is a list of the types of errors we check for:
4XX
- 400 – Bad Request
- 402 – Payment Required
- 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 – Request Entity Too Large
- 414 – Request URI-Too Long
- 415 – Unsupported Media Type
- 416 – Request Range Not Satisfiable
- 417 – Expectation Failed
3XX
- 300 – Multiple Choices
- 302 – Found
- 303 – See other
- 305 – Use Proxy
- 307 – Temporary Redirect