What is domain name and how does it work?

What is domain name and how does it work. It is a very beginning question for beginner bloggers. If you are interested in blogging, you must have heard this name many times. If you are new to blogging or want to start blogging, then you need to know about the domain.

What is domain name and how does it work

A domain is required in the internet service to start a blog or website. Your blog or website will start without a domain, but it hardly reaches the user.

it’s very easy to understand all about the domain name. its works like a phone book which is used on mobile phones. Let’s see what this domain name is and all about?

What is the domain?

Today we have a very early topic ‘What is domain name and how does it work’. And beginners need to know this. Because it is very important to know about a good domain name to build a website with a website builder.

A domain is the address of a website that leads any Internet user to that website. By typing this domain in the search bar of the internet browser, you can extract the information available in it from a website.

A domain is a group of one, two, or more words assigned names and numbers registered by a website owner in the domain name registrar that is associated with an extension (.com, .in, .uk, .net).

If we say that the domain is an address to reach a place where you have to reach in the web server. This address helps us reach that place and we soon reach someplace.

Right now you are reading this blog whose address is bloggingperk.com. This address is the domain name of this blog, which is connected to web hosting. This can be accessed by typing on the search bar of the internet browser.

The domain works like an entry gate for any web server, if a website is a home then the domain is its door.

Example of Domain

I think it is not necessary to tell because in today’s generation no one is untouched by the internet. Everyone’s account remains on social media.

Everyone would know Facebook, this is a social platform in which you can share videos, images. This is a website with the domain name facebook.com, fb.com, which is connected to a hosting server.

There are many examples of other domains like this – shoutmeloud.com, shayarilo. in, hindime.net, etc.

In the video below, Emily and Darlene, expert of the popular domain registrar company Godaddy, have told about what is domain name and how does it work.

Source GoDaddy

Different types of domain

In this article, we will know what is domain name and how does it work. But let’s have a look at the types of domains. It helps to buy the best domain name and also the structure of the domain.

Top-level domain

This domain is also known by the name of TLD, it comes at the top of the order of the domain name system. The TLD is itself a root server. Which controls all the domain names inside it.

A top-level domain is written after the dot (.) In the domain name, eg – bloggingperk.com.

It contains .com TLD. It is divided into two parts 1. Generic top-level domain (gTLD) and 2. Country-code top-level domain (ccTLD).

Country-code top-level domain

Country-code top-level domain is also called ccTLD. Each country has its own root TLD, which is in the short form of that country name. For example – .in in India and .uk in the United Kingdom.

But it is not necessary to use it only by a specific country. Any ccTLD can be used by any country.

If we look at Colombia’s ccTLD, its ccTLD is “.co”. but it is used as a TLD in many countries, like – example.co, blogging.co etc.

Generic top-level domain

It is part of the top-level domain that is used for the purposes of the specific business. That is, it defines the business for which a website is created.

Example – If someone is related to education, such as a coaching center. Whose name is Avinash coaching, then his generic domain would be something like this – avinashcoaching.edu. It has edu as a generic top-level domain, and edu gTLD will have its own separate root server which has all the domain name controls inside it.
It is not necessary that only edu gTLD has to be taken for related service from education, but you can use it to define your business.

Second-level domain

In any domain name, the name that remains before the TLD is the second-level domain. This can be your business name.

For example, my domain is www.bloggingperk.com. In this, .com will be called TLD, and the blogging Perk wrote before and will be called second-level domain.

Third-level domain

The third level domain is also called the subdomain. Generally, we do not need a third-level domain to connect a primary site to a domain. But we can use it to redirect to any of our other sites, pages, or apps, or say that in the third level domain, we can host any page, site, or app.

For example – bloggingperk.com is the domain name of my blog, and I want to launch a web app and I don’t want to get a new domain. So I can create a third-level domain using my existing domain. Such as app.bloggingperk.com.

app.bloggingperk.com has an “app” third-level domain and bloggingperk.com is TLD.

What is a domain name system (DNS)?

A domain name system is an Internet address book that stores and controls the Internet Protocol (IP) address of all sites and controls it. Any IP address is linked to the domain name only through DNS.

This is the same as our phonebook in which the number of many acquaintances is saved by their name, in which their number remains.

Today all electronic machines are connected to the Internet. All these machines have a unique identity known as the IP address. These IP addresses vary from device to device.

Similarly, many servers are available on the Internet where data is stored and kept. All these servers have a unique IP address, which connects to the domain through a system.

Through the same domain, we can access the IP server connected to it. All this is possible through DNS.

Why the topic “what is domain name and how does it work” important for you. don’t worry I am telling you. without information about the domain name and their work you cant understand why you need to buy a domain name.

Who and why created the domain name system?

Let’s take a look at the person who made it easy to navigate the Internet server with the help of the domain. After that, we will come back to our guide on what is domain name and how does it work.

DNS was invented in 1983 by Paul Mockapetris to make navigation of the Internet easier. This made it very easy to roam the internet world.

Paul Mockapetris inventor of DNS

At that time, when DNS was not invented, to extract some information from the Internet, you had to enter the IP address of the server from which you have to take the information. This system was very complicated. And it was also very difficult to remember so many IPs in digit form.

To get rid of this problem, Paul Mockapetris designed this DNS. And it has helped that today we do not need to remember the IP address of any server.

What is a type of DNS and how domain name system works?

The Domain name system works in four steps this is also called a type of DNS that passes through these four servers Recursive server, root server, TLD name server, and an authoritative DNS server. Processes from queries to IP address returns.

These four servers find out human-readable queries (domain name) by searching the map IP address from it in the domain record. This process is so fast that our computer gets connected to the server in a few seconds.

domain name system infographics

Now let’s have a look at the process of the server is which is handled by the DNS client(resolver). This guide definitely helps you to better understand DNS work.

Recursive server – The browser first sends DNS queries to the recursive DNS server, this recursive server first finds the IP address in DNS cache memory. If the IP address of the queries domain is found in the cache memory then it connects directly to the IP server.

If the recursive server does not get the IP details then it goes to the queries instruction Root server.

Root server – By identifying the queries in this root server it is inspected which domain is the domain of the TLD zone entered in queries. This means to say that here the extension of the domain is extracted from the domain name.

After extracting, the resolver receives instructions to go to the TLD server and get the IP address information from the TLD zone found out in the extract.

TLD name server – All TLD has their own set of name servers, in which all the domains and subdomain listed remain in that zone.

Sends a request for the resolver IP address from the TLD server. All TLD servers have an authoritative server that holds records of domains and IPs.

From here the TLD server references the request of the recursive resolver to the authoritative server.

Authoritative name servers – As I mentioned above, all TLD zones have their own authoritative name server which keeps the information about all records. This authoritative server automatically references the request of the recursive resolver in the domain record for which the queries are performed.

From here the resolver gets to know the IP address which is mapped to the queried domain.

Now the recursive resolver sends the IP address to the computer. The computer then sends a request to access information from the server through that IP address and connects to the server.

Why we need a domain name?

It is an interesting question that we need to register a domain, if it is there, why can’t we run a website without a domain? This question often comes to the mind of such bloggers who do not have the budget or want to create a free website.

Technology has advanced so much in today’s generation that every little information is reaching a common man through the Internet. In such a situation, everyone knows the benefits of blogging, and everyone wants to make money by making a blog. Due to this, millions of blogs and websites are being created every day.

As I mentioned above, all blogs are connected to some server, which needs to have its IP address to access. But today due to having many blogs, we are unable to remember the IP address of all. Now in such a situation, if we have a website, then how to set it in the mind of the people.

The domain name is a simple answer to this, it is not only easy to remember but also a brandable sign that emerges in front of the users.

Can we create a website without buying a domain?

Yes, even today, we can create a website without a domain, but the user has to type the IP address to go to this website, which can be very erratic. Even if you do not have the budget to purchase the domain, nowadays all hosting companies provide a free domain that is called a subdomain. Example – bloggingperk.blogspot.com, this is the subdomain of Blogger which comes free.
Don’t forget to share your experience with this What is domain name and how does it work based article. If you have any questions about this topic you feel free to ask me.

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