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Reverse-Mapping-Overview

• A good info regarding the reverse mapping overview can be found at:

reverse mapping overview

The normal domain name structure as a tree starting from the root. We write a normal domain name LEFT to RIGHT but the hierarchical structure is RIGHT to LEFT.

   domain name = www.example.com
   highest node in tree is = .com
   next (lower) = .example
   next (lower) = www

   An IPv4 address is written as:

   192.168.23.17

This IPv4 address defines a host = 17 in a Class C address range (192.168.23.x). In this case the most important part (the highest node) is on the LEFT (192) not the RIGHT. This is a tad awkward and would make it impossible to construct a sensible tree structure that could be searched in a single lifetime.