HTTP Status Codes

HTTP 200 OK

The request succeeded; the response body carries the result.

HTTP 301 Moved Permanently

Permanent redirect — cacheable, passes link equity, updates the indexed URL.

HTTP 302 Found

Temporary redirect via the Location header; the original URL stays indexed.

HTTP 403 Forbidden

The server understood the request but refuses to authorize it.

HTTP 404 Not Found

The requested resource does not exist at this URL.

HTTP 429 Too Many Requests

Rate limited — slow down and honor the Retry-After header.

HTTP 500 Internal Server Error

Generic server-side failure; the request was valid but the server errored.

HTTP 502 Bad Gateway

Gateway or proxy received an invalid response from an upstream server.

HTTP 503 Service Unavailable

Service temporarily unavailable from overload or maintenance; usually transient.