=== Código HTTP : 206 ===

HTTP/1.1 206 Partial Content
Server: nginx
Date: Sat, 13 Dec 2014 02:40:46 GMT
Content-Type: application/pdf
Content-Length: 2049
Connection: close
Last-Modified: Mon, 17 Nov 2014 14:41:24 GMT
Accept-Ranges: bytes
Vary: Accept-Encoding,Cookie
Content-Range: bytes 0-2048/832919


El enlace es válido.