ftp.ntua.gr:/ubuntu/dists/bionic/restricted/source/by-hash/SHA256/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 4c996aa1a9e1a5f9a7ddd4dc5866b917b69c750e146ff..> 25-Oct-2017 02:16  103   
[   ] 4afd34a1b3f8aeeabd969ac3ddb4a34327e8bec3c2117..> 23-Apr-2018 15:11  5.7K  
[   ] 2b7baa02677bea46540a8b7a0e52881a2715617932615..> 23-Apr-2018 15:11  5.2K
Apache/2.2 Server at ftp.ntua.gr Port 80