in November 1983 came forward with two RFCs describing the domain name system. “DNS was a very significant change in the way we thought about the system being organized,” said Postel. “Tree-branching” was the guiding metaphor. Each address would have a hierarchical structure. From the trunk to the branches, and outward to the leaves, every address would include levels of information representing, in progression, a smaller, more specific part of the network address.
