There are 6 HTTP header status codes:
- 200 OK – this means that the page has been located and is fine.
- 301 Moved permanently – this means that the page used to be at that URL but has been successfully 301 redirected to a new URL.
- 302 Found – 301 should be used instead.
- 303 See Other – 301 should be used instead.
- 403 Forbidden – this means that access to the URL has been restricted
- 404 Not Found – this means that the file cannot be located at the URL.