ftp.ntua.gr:/debian/dists/stretch-updates/main/source/by-hash/SHA256/?C=N&O=A 
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275 13-Apr-2021 22:57   32   
[   ] bccb2e9983ca64ac2afaed92d3d9298a98b11a13230525c3be8e6089bdd629c7 18-Jun-2017 11:28   91   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec 13-Apr-2021 22:57   20
Apache/2.2 Server at debian.noc.ntua.gr Port 80