ftp.ntua.gr:/debian/dists/stretch-backports/non-free/binary-all/by-hash/SHA256/?C=M&O=A 
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[   ] 036fc8ac0fd31f81f59282260bc0c54dbb766d3518e11d46bee89952b7e3edd0 18-Jun-2017 11:28  179   
[   ] 27c6d7e05dcde8988d2b15d4a6017ba4ec57c72125289c2a292ae5deac1afc72 16-Sep-2019 17:05  6.4K  
[   ] 3a4cd94d90769aa54b9e34ec93df8883cf7975d25c0afedd109e3504de28ff07 28-Mar-2020 22:57  6.9K
Apache/2.2 Server at debian.noc.ntua.gr Port 80