What is DNS server? How does DNS server work? Full Details

What is DNS server? How does DNS server work? 


Today I will discuss about DNS Server. Basically most of us don’t know what DNS is all about. What is a DNS server? And what is the function of DNS Server? I am with you today on all these issues. So let’s discuss all of this collectively. Through which you will know. And you need to know all these things. Then you can make the work of the website a little easier.

Most of the people in the world who work on the website do not know that our security system is strengthened by the speed of our website and server connection through DNS. So all this information will be discussed below. You pull down a little with difficulty.


DNS Server

The full form of DNS is Domain Name System. You can think of DNS Server as a phone book. When we search by typing an address in a browser, it goes from ISP to DNS Server.

The DNS Server then converts the given address to a specific IP. Sends it to us again. In the DNS Server, the address and its specific IP are written. For example, we save by writing his name along with the number on the phone chest of our mobile.

So that it is easy to find later. That’s why DNS Server can be imagined as a phone book.



How does DNS Server work?dns-server-network

Do you already know what a DNS Server is? Now let’s find out what DNS Server does? DNS Server basically saves many domain names along with its IP address. The IP addresses of all the domains in the world are different. You can never visit two websites using one IP address.


When we search by typing a domain name, the DNS Server converts that domain name to its specific IP address. Returns us. The reason why DNS Server returns us IP address is that ISP (Internet Service Provider) cannot find server of any web site without IP address.


From the above we know that – when searching by typing the name of a website. It then goes to the DNS Server to convert to an IP address. But it only goes once. That is when you want to access a website for the first time with your browser. Then just go to the DNS Server.


The next time you log in again, the IP address of the website will be stored in the browser’s cache memory. From there the browser will enter the website with IPT.


You already know a lot about DNS Server. If you want to know more about DNS Server then you can read the following. If you do not read, there is no problem. DNS Server does its job in a few steps. The steps of DNS server are discussed below.

Step 1: Go to any of your browsers, search by typing the address of any website. For example, google.com


Step 2: After searching google.com, it will go to ISP. ISP after coming to ISP. At first it will try to find out in its cache memory if anyone ever went to google.com using its server. If so, he must have the IP address of the website. That will take you to google.com with the IP address. But if you have never used an ISP’s server before. Then it will request to the root server.


Step 3: Root server is the main server of the domain server. The root server is at the top of the DNS higher key. There are thirteen root servers in the world. Which are placed in different parts of the world.


Root servers are operated by twelve different organizations. Each root server has its own IP. The funny thing is that the root server does not know anything about the IP of the domain.


Now the question is –

1.Why is it being sent to the root server?

This is because the root server knows where google.com is.

Now here is another question-

2. How does the root server know it?

3. Root Server has google.com IP?


The answer to this question is that Root server.com.info can find out through this type of top label domain. There are separate servers for each top label domain. If it is .com, then the root server is where it is .com. He will give his information to the ISP. Then the ISP will request the TLD (Top Label domain) server.


Step 4: TLD server but do not know anything about the IP address of the domain. But he collects a lot of information about the domain. TLD server It knows which name server has the IP address of the domain. Then the TLD server gives the name server information to the ISP. The ISP then requests the Name server with that information.


Step 5: Name server The server where the IP address of the domain is saved. Then he will look at the domain, find out his IP address and back the ISP. Eventually the ISP will back up the browser and the browser will show us our web site.



How to Increase internet speed with Google DNS



First of all, what is DNS resolving? When we type an address to view a website, we type the domain name of the site (eg: http://www.google.com). DNS server converts this name to IP Address (eg: It has to be done every time and most of the websites have to be resolving a few times to get the right IP.


Moreover, when many people visit many pages at the same time, even after pressing the server, it takes some time to resolve, so it takes more time to load the page. In addition to ISP, DNS resolver server is used to provide some relief from this problem (eg: Open DNS). Google has been launching its own DNS service for several days now. The website can be visited more quickly. Many may be benefiting from it. Of course I do not understand my own!


You can enjoy this service yourself. Google’s own DNS Server Address is and Replace the DNS Server Address given by your ISP with these. DNS Server Address settings are located in different places in XP, Vista, 7, Ubuntu, so I did not show. Moreover, there are many small tools available, with which you can switch to ISP’s and Google’s DNS Server Address with a single click. I gave such a tool below.


Google DNS Helper


This is a portable tool. Turning it on and clicking Switch to Google DNS will change your settings. Then click on Restore DNS to go back to the previous settings.


Caution: Save the previous address somewhere before changing the DNS Server Address. There will be no reason to worry.




What is DNS in network?


The DNS Network then converts the given address to a specific IP. Sends it to us again. In the DNS Network, the address and its specific IP are written. For example, we save by writing his name along with the number on the phone chest of our mobile.


What is the DNS in computer network?

DNS, a complete domain name system, is a network service that converts between the World Wide Web “name” address and numeric Internet addresses. The concept of name servers came about as a result of the first computer networks in the mid-1970s.


What is DNS in networking with example?

DNS, or the Domain Name System, translates human readable domain names (for example, www.google.com) to machine readable IP addresses (for example, 888.0. 2.44).


What are the two main advantages of DNS?


  1. If the host’s IP address changes, you can map the new IP address.
    Easier to remember than IP address.
  2. Allow companies to use a domain name hierarchy that is independent of assigning an IP address.


What is a DNS server used for?


The Domain Name System (DNS) is an important part of the Internet, providing a way to map names (a website you’re looking for) to numbers (website addresses). Anything connected to the Internet – laptops, tablets, mobile phones, websites – has an Internet Protocol (IP) address.


How do I find out what my DNS server is?

Open your command prompt from the Start menu (or type “Cmd” in the search in your Windows taskbar). Next, type ipconfig / all at your command prompt and press Enter. Look for the field labeled “DNS Server”. The first address is the primary DNS server, and the next address is the secondary DNS server.

Thanks a Lot ….

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