Today there are people trying to dictate how to domain name system known as DNS by the cool kids and by the association of the internet as a whole works
Unfortunately many of these powerful individuals and others don't understand what exactly DNS is. This post is for them and for anyone else that wants to learn about DNS we're going to go over the basics what the DNS is how it works and how if you use the internet it affects your life daily that you know what the NSA is already stick around anyway you might learn something here .
We love DNS and could obviously spend hours going in each and every detail but we're only explaining the basics here. If you ever decide to run for public office someday and want to make decisions on DNS this'll help.
Ok let's begin the domain name system is indisputably one of the most important and overlooked parts of the internet. Without the NS the internet as we know it today would collapse and we would all be looking stamps to pay our bills or driving to an actual store to purchase something.
We all know or should know that the computers and make up the internet or set up large networks and communicate with each other via underground or underwater wires and are identified using strings of numbers known as IP addresses.
Since not majority of us like have the mental capacity to sort through and retain hundreds of numerical series. DNS is used to translate an actual name into these numbers but how does the domain name system work in a web browser?
Let’s say you enter the URL www.example.com as a well as an example when you type www.example.com into your address bar you will actually be looking for www.example.com . Yes there is a . at the end of the domain name one that you never see and one that you never type when you type in www.google.com you are actually going to the page www.google.com . Seriously try it out but wait okay look that's long enough anyway that end . represents the root of the internet namespace that is why is this so important because this is where it all begins when you first search for www.example.com .
Your browser and your operating system well first determine if they know what the IP address is already it could be configured on your computer or could be in memory.
So the browser ask the operating system and they both don't know where www.example.com . is what happens next the operating system is configured to ask a resolving name server for IP addresses it does not know the resolving name server is the workhorse of the DNS lookup it is either configured manually or automatically within your operating system your operating system asks or queries the resolving name server www.example.com .
The resolving name server may or may not have this in memory or you know - yes the CAC not that never mind for the sake of this post it does not the only thing that all resolving name server should know is where to find the root name servers.

That appears at the end of every domain name you type into that address bar. The root name servers will reply with that I don't know but I do know where to find the com nameservers try there. The com name servers are called the top level domain name servers or TLD name servers. The resolving name server then takes all of this information from the root nameservers puts it in its cache and then goes directly to the com TLD name servers. When the resolving name server queries www.example.com the TLD name servers respond no but I don’t know where to find the example.com name servers. Try this next set of nameservers which are the authoritative name servers.
So how did the com TLD name servers know which authoritative name servers to use? With the help of the domain registrar! When a domain is purchased the registrar is told which authoritative name servers that domain should use. They notified the organization responsible for the top level domain the registry and tell them to update the TLD name servers.
So anyway the resolving name server takes a response from the TLD name server stores it in cache and inquiries the example.com name servers at this point the authoritative name server will say “hey I know where that is tell your browser to go to the IP address so and so .
Once the resolving name server takes this information from the authoritative name server puts it in cache and gives a reply to the operating system. the operating system then give this to the browser and the browser then makes a connection to the IP address requesting the web page for www.example.com.
Pretty cool huh? Well the process seems complex and believe me it is this whole cycle takes less time that it takes you to blink and DNS was designed to work extremely fast and efficiently.
It is an integral part of the internet. Once you understand this you can clearly see too many different facets and organizations that are responsible for a single DNS lookup. One look up there is a resolving name server, the root name server, the TLD name servers and the authoritative name servers. If anyone were to dramatically change or filter any part of the DNS process it could lead to disaster.
This is why we believe the people with the power to pass legislation need to understand what's at stake before making decisions that could drastically affect how the internet works.

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