IANA provides standards on this subject matter. For IPv4, here is what they've in their "Distinctive objective address registry". Meaning, for our purposes, anything at all in these address blocks should not be assigned as they shouldn't be routable "publicly". I believe that addresses starting up Using these IPs are https://cruzpeqiz.blogpostie.com/57907871/the-smart-trick-of-255-payday-loan-that-no-one-is-discussing