Authoritative DNS server – an overview

Authoritative DNS server is part of DNS resolution. It is essential because it contains information about the zone records. Furthermore, we shall go over how it works in depth in our article.

Where in the DNS resolution is the Authoritative DNS server located? 

To easily and quickly access websites, we use DNS. We don’t need to remember the long and difficult IP. All we have to do is type the domain name of the website into a URL search window, and it will load instantly. The process in which we use the domain name to get the IP of the page we are looking for is called DNS resolution. 

Best Practices for Primary DNS Server Management

How does it work?

A user makes a query through a domain name. This request arrives at the Resolve server. Since the process has a hierarchical appearance, it starts from right to left. From there, the query reaches the root server(gives us information about “.”), then the TLD server(gives us information about, for example, “.com”). Then the query also reaches the Authoritative DNS server. It gives us the DNS zone information. Then, with the assistance of an internet service provider (ISP), the details for the IP of the domain name, is sent to the computer and the searched page is loaded. For example, if we searched for, DNS would tell us that the site’s IP address is

In general, this is what occurs whenever a customer requests the website. And it should happen as soon as possible so that they don’t become impatient and leave.

Authoritative DNS server – meaning

We already know where the Authoritative server is in the process, but let’s go through what it does. An authoritative DNS server(or authoritative nameserver) is a name server that contains the original zone records for the domains (for A, AAAA, CNAME, TXT, etc.). In other words, it does not cache data. Nameserver gives us information about the IP of the domain. As a result, it only responds to queries about domain names that are registered in its configuration system. This makes it extremely efficient and quick.

The purpose of an authoritative nameserver is twofold. The first is to store IP address information, and the second is to provide Internet Protocol details about the requested domain to the recursive servers. This data transmission is critical for recursive servers to return to the computer and browser which demanded it, allowing them to connect and at last load the website.

Authoritative name server types

Authoritative DNS Server is classified into two types:

  • Master or primary name server stores the original zone records; in other words, there are no copies. If an administrator needs to make changes, they are made on the primary server. Furthermore, this is the only server that permits DNS record changes. 
  • Slave or secondary name server stores all copied information from the master server. There is usually more than one slave server. The idea is that it will act as a backup server if the primary server fails.


The Domain Name System (DNS) has a number of fundamental components, one of which is the Authoritative Name Server. We can conclude that without this server, we will not be able to get the IP of the page or anything else on the Internet that we are looking for. Naturally, this will make our browsing unpleasant. 

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