ftp.ntua.gr:/ubuntu/dists/bionic/universe/debian-installer/binary-amd64/by-hash/SHA256/?C=D&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] d8156427f083fdfa313e7e795f6d6ebfaf4539ceb7cda..> 26-Apr-2018 01:41   28K  
[   ] c9149f28077b1553324187f8243c8bfff2630bd90b27c..> 26-Apr-2018 01:41   32K
Apache/2.2 Server at ftp.ntua.gr Port 80