ftp.ntua.gr:/debian/dists/buster-backports/non-free/Contents-armhf.diff/by-hash/?C=M&O=A 
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[DIR] Parent Directory                                                                  -   
[DIR] SHA256/                                                      19-Aug-2021 23:33    -
Apache/2.2 Server at ftp.ntua.gr Port 80