This PDF document holds a single paged scan of an internally distributed mail from German telecommunications company T-Systems (Deutsche Telekom), revealing over two dozen secret IP address ranges in use by the German intelligence service Bundesnachrichtendienst (BND).
You can download it from the following link: https://packetstormsecurity.com/files/download/71975/bnd-networks.pdf
Source: https://packetstormsecurity.com/files/71975/bnd-networks.pdf.html