ftp.ntua.gr:/debian/dists/oldoldoldstable-updates/non-free/binary-amd64/by-hash/SHA256/?C=M&O=A 
Icon  Name                                                                 Last modified      Size  
[DIR] Parent Directory                                                                          -   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec     08-Jul-2019 20:55   20   
[   ] aaefc5ddc40675898f443ccb777f61c5e9ae9a891176a40ce011e65b9dfe330e     08-Jul-2019 20:58  121
Apache/2.2 Server at ftp.grnet.gr Port 80