> For some applications, it's valuable to have globally-unique addresses even if they're not (all) broadly accessible from the open Internet. For a real-life e

> For some applications, it's valuable to have globally-unique addresses even if they're not (all) broadly accessible from the open Internet. For a real-life example of that: according to documentation which can be found at its website, the Brazilian Central Bank has been allocated a full /18 for the national inter-bank network; each financial institution connected to that network receives a /27 or a /28 (or a pair of them) from that range. If you look up that address range on bgp.he.net, you'll find out that it's not announced to the public Internet at all.