ftp.ntua.gr:/debian/dists/buster-backports/contrib/debian-installer/binary-s390x/by-hash/SHA256/?C=N&O=D 
Icon  Name                                                                          Last modified      Size  
[DIR] Parent Directory                                                                                   -   
[   ] 1509a6a8aaa52164092b1d0a20275a99d1241068b7a0b90985ec5e40e9881afa              07-Apr-2019 23:17  179   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275              07-Apr-2019 23:17   32
Apache/2.2 Server at debian.noc.ntua.gr Port 80