ftp.ntua.gr:/debian/dists/stretch-backports/contrib/source/by-hash/SHA256/?C=S&O=A 
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[   ] 0247ce11d9addc20d080a1d952a8a3dc434bf45503c63b3f411e4436d3b307cd 18-Jun-2017 11:28  181   
[   ] 3cb1a8fe14c2f4116a8a00cfabcbe47e1a36c37b1c90a18345a679f27a5f6f04 16-Jul-2019 22:58  6.4K  
[   ] 72940eea91ed718fb6f1684ad09d79dd7edb19f3e2e6d8114e514092841c55e7 28-Mar-2020 22:57  6.8K
Apache/2.2 Server at debian.noc.ntua.gr Port 80