ftp.ntua.gr:/debian/dists/stretch-backports/contrib/debian-installer/binary-arm64/by-hash/SHA256/?C=M&O=A 
Icon  Name                                                                           Last modified      Size  
[DIR] Parent Directory                                                                                    -   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275               18-Jun-2017 11:11   32   
[   ] dae2661304b669cc8475704dea9f455d78c855e3c1fd5920969205f657d7357d               18-Jun-2017 11:28  180   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec               19-Jun-2017 23:59   20
Apache/2.2 Server at debian.noc.ntua.gr Port 80