HTTP Status Code: 301 Moved Permanently
The 301 (Moved Permanently) status code indicates that the target resource has been assigned a new permanent URI and any future references to this resource ought to use one of the enclosed URIs. Clients with link-editing capabilities ought to automatically re-link references to the effective request URI to one or more of the new references sent by the server, where possible. (RFC 7231: Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content)
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