ftp.ntua.gr:/mirror/ubuntu/dists/groovy-proposed/universe/debian-installer/binary-amd64/by-hash/SHA256/?C=M&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 799270f348a26fb5eb7cee315010c9479ed01cbe70a70..> 10-May-2021 11:50  1.4K  
[   ] e3cb269662a80be23f1d51677c9d903a2095a8886ed24..> 10-May-2021 11:50  1.5K
Apache/2.2 Server at ftp.grnet.gr Port 80