Today’s article will explore the DNS resolution – its purpose, how it works, and why it is critical for you and your business. So, if this sounds interesting to you, let’s take deep into Domain Name System resolution.
DNS resolution – Definition
DNS resolution is the process of translating a domain name into an IP address (IPv4 or IPv6). Without it, the Internet would function in a very different way. However, it occurs behind the scenes because typical consumers are unaware of the situation. People are accustomed to inputting a simple domain name into their browser, which loads the appropriate website. However, the user’s DNS query is routed via numerous servers before receiving a complete response.
The DNS resolution process
The DNS resolution procedure starts when you try to connect to a website you haven’t visited before. So, let’s break the operation down into a few steps.
- It all starts with the domain name you type into your browser. A DNS query is issued, and the DNS lookup process for determining the domain name’s IP address begins.
- The DNS query is sent to the recursive DNS server. First, it will check if the required data is in its DNS cache. If it isn’t located there, this server will query the remainder of the DNS servers to acquire all necessary information.
- The Root server is the initial stop on the recursive DNS server’s search. The Root is the topmost level in the DNS hierarchy. It tells you where the TLD (Top-Level Domain) server for the specific domain name is located. For instance,.info,.com,.net, and so forth.
- One level below the Root server, the TLD server gives information on the domain name’s precise nameserver.
- The Recursive DNS server then requests the exact domain name from the authoritative nameserver. Finally, this last server can provide accurate information and an IP address.
- When the Recursive DNS server receives the response to the DNS query, it returns it to the user. It will also save it in its DNS cache for future reference. The browser displays the requested webpage, which you can visit.
Why is it important?
DNS resolution is essential for various reasons:
- Speed. The DNS resolution is the first step when a user accesses your website. The user will most likely quit your page if it takes too long to load and access. That is why this procedure must be completed quickly.
- Availability. The nameserver responsible for your domain name must be dependable. An extra DNS service is a terrific approach to ensure that your domain is always accessible to your clients.
Suggested article: A complete breakdown of Anycast DNS
Conclusion
Typical Internet users are often unaware that the Domain Name System is used to locate a page. We may assume that visiting websites will be complicated and slow without DNS resolution. Our Internet surfing is a lot more fun and accessible due to it.