ftp.ntua.gr:/debian/dists/stretch-backports/contrib/debian-installer/binary-ppc64el/by-hash/SHA256/?C=S&O=A 
Icon  Name                                                                             Last modified      Size  
[DIR] Parent Directory                                                                                      -   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec                 19-Jun-2017 23:59   20   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275                 18-Jun-2017 11:11   32   
[   ] cced1401fc1d2baddfb7bf7109f156585c6246b5c837ccd6f0a2334508a7d23a                 18-Jun-2017 11:28  182
Apache/2.2 Server at debian.noc.ntua.gr Port 80