IANA supplies expectations on this matter. For IPv4, here is what they have of their "Specific goal handle registry". Indicating, for our needs, anything at all in these address blocks shouldn't be assigned simply because they should not be routable "publicly". Number945Number945 61711 gold badge55 silver badges99 bronze badges 1 https://claytonmjkjh.elbloglibre.com/36711216/not-known-factual-statements-about-255-payday-loan