What is DNS? The Domain Name System (aka DNS) is used to resolve human-readable hostnames like www.notesshow.blogspot.in into machine-readable IP addresses like 204.13.248.115. DNS also provides other information about domain names, such as mail services. But why is DNS important? How does it work? What else should you know? History of the DNS When the Internet was still in its infancy when you wanted to visit a website you had to know the IP address of that site. That’s because computers are and were only able to communicate using numbers. It’s long, hard to remember, and we (humans, I presume) are not robots. We needed a way to translate computer-readable information into human-readable. And it had to be fast, lightweight. DNS In the early 1980’s, Paul Mockapetris came up with a system that automatically mapped IP addresses to domain names. And the DNS was born. This same system still serves as the backbone of the modern Internet, today. And yet, only a small subs...
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