ftp.ntua.gr:/debian/dists/stretch-backports/contrib/binary-arm64/by-hash/?C=M&O=D 
Icon  Name                                                  Last modified      Size  
[DIR] Parent Directory                                                           -   
[DIR] SHA256/                                               13-Sep-2020 05:23    -   
[DIR] MD5Sum/                                               13-Sep-2020 05:23    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80