My 10000+ users network, which spans the whole State and is very complex, has a "strange" addressing scheme.
Though our PCs are not directly connected/exposed to the Internet, our network designers assigned IP addresses taking them from a range different the "ordinary" IANA-reserved private IPv4 network ranges (10.0.0.0-10.255.255.255, 172.16.0.0-172.31.255.255, 192.168.0.0-192.168.255.255).
Assume that the IP addresses used in our intranet are in the range
, i.e. addresses that are officially assigned in Internet (and don't belong to us).
Can anyone explain the advantages (if any) of this strange choice?