IANA provides requirements on this issue. For IPv4, Here's what they have in their "Specific objective address registry". That means, for our reasons, everything in these tackle blocks should not be assigned because they should not be routable "publicly". Stack Trade network consists of 183 Q&A communities including Stack Overflow, https://745cash90076.techionblog.com/36784259/255-payday-loan-no-further-a-mystery