ftp://ftp.uni-frankfurt.de/pub/Mirrors3/debian.org/debian/pool/main/libz/  direct

[DIR]libzvt/  direct  1342+ twin directories
[DIR]libzrtpcpp/  direct  829+ twin directories
[DIR]libzorpll/  direct  509+ twin directories
[DIR]libzn-poly/  direct  427+ twin directories
[DIR]libzip-ruby/  direct  606+ twin directories
[DIR]libzip/  direct  1283+ twin directories