ftp.ntua.gr:/mirror/ubuntu/dists/xenial-backports/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] Contents-amd64.gz                                14-Jul-2020 07:38  101K  
[   ] Contents-i386.gz                                 14-Jul-2020 07:38  101K  
[   ] InRelease                                        14-May-2021 09:23  104K  
[   ] Release                                          14-May-2021 09:23  103K  
[   ] Release.gpg                                      14-May-2021 09:23  916   
[DIR] by-hash/                                         19-May-2016 23:26    -   
[DIR] main/                                            03-Feb-2016 17:04    -   
[DIR] multiverse/                                      03-Feb-2016 17:04    -   
[DIR] restricted/                                      03-Feb-2016 17:04    -   
[DIR] universe/                                        03-Feb-2016 17:04    -
Apache/2.2 Server at ftp.ntua.gr Port 80