IANA presents benchmarks on this subject. For IPv4, Here's what they have got of their "special purpose handle registry". Meaning, for our applications, anything in these handle blocks shouldn't be assigned since they should not be routable "publicly". Number945Number945 61711 gold badge55 silver badges99 bronze badges 1 one I've viewed https://insta-cash77876.blogchaat.com/36799489/the-definitive-guide-to-255-payday-loan