List of best mirrors for IP address 18.221.59.121, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/raspbian/pool/main/libd/libdevel-stacktrace-perl/libdevel-stacktrace-perl_2.0500-1.debian.tar.xz