416 Requested Range Not Satisfiable

A server SHOULD return a response with this status code if a request included a Range request-header field ([RFC 2068], section 14.35), and none of the range-specifier values in this field overlap the current extent of the selected resource, and the request did not include an If-Range request-header field. (For byte-ranges, this means that the first- byte-pos of all of the byte-range-spec values were greater than the current length of the selected resource.)

When this status code is returned for a byte-range request, the response SHOULD include a Content-Range entity-header field specifying the current length of the selected resource (see [RFC 2068], section 14.16). This response MUST NOT use the multipart/byteranges content- type.