ftp.ntua.gr:/mirror/ubuntu/dists/focal/universe/debian-installer/binary-amd64/by-hash/SHA256/?C=S&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 5d2947f78ad34f245330d0ce9aaf306e50d3dc93ae6d2..> 22-Apr-2020 08:45   27K  
[   ] 27f539c1da746daa25f37d697aa7258bfb3aa7a6287ea..> 22-Apr-2020 08:45   31K
Apache/2.2 Server at ftp.grnet.gr Port 80