DNS (Domain Name System) serves as a crucial component for various networking technologies including email servers, web browsing, and streaming platforms like Netflix and Spotify, to name a few.

It operates via a specialized machine known as a DNS server — which maintains a database mapping of public IP addresses to their associated hostnames. This allows the server to resolve or convert domain names into IP addresses whenever a user makes a request.

[ You might also like: 4 Ways to Find Server Public IP Address in Linux Terminal ]This setup eliminates the need for users to memorize the IP addresses of all the websites they access.

Although there are many aspects of DNS servers we could explore, such as traffic redirection and defense against malicious attacks, our attention today is on determining your own DNS server's IP address.

Depending on the Operating System you're using, there are different ways to find this information. However, Linux, BSD, and Unix-like systems follow the same procedure, so we’ll start with them.

How to Find My DNS Server IP Address

1. To locate your DNS Server IP address, use either the cat command or less command:

<code>$ cat /etc/resolv.conf
OR
$ less /etc/resolv.conf</code>

2. Alternatively, you can run the following grep command:

<code><strong>$ grep "nameserver" /etc/resolv.conf</strong>

nameserver 109.78.164.20</code>

3. On modern Linux distributions that utilize systemd, the systemd-resolve command can be used to check the DNS server details:

<code>$ systemd-resolve --status | grep "DNS Servers"</code>

4. If your system uses NetworkManager, retrieve DNS server details with the nmcli command:

<code>$ nmcli dev show | grep 'IP4.DNS'</code>

In the example above, nameserver 192.168.0.1 represents a DNS server IP address formatted in dot notation — the standard format applications on your computer use for DNS routing purposes.

How to Find My Website DNS Server IP Address

To discover the DNS Server IP address of a website, you can employ the dig command, commonly used for querying DNS data:

<code>$ dig tecmint.com</code>

Sample Output

<code>; > DiG 9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.1 > tecmint.com
;; global options:  cmd
;; Got answer:
;; ->>HEADER
<p>The output will list the IP addresses of authoritative nameservers for your website (i.e., the DNS servers managing your domain).</p>
tecmint.com.        21  IN  A   204.45.67.203
tecmint.com.        21  IN  A   204.45.68.203

<p>Please note that the actual IP addresses returned may differ depending on your site’s hosting provider or domain registrar. If your website utilizes third-party DNS services such as Cloudflare or Google Cloud DNS, the IPs displayed will be specific to those providers.</p>
<p>Simple enough? Perhaps we’ll discuss primary and secondary DNS Server addresses in a future article. Until then, feel free to comment below with any thoughts or suggestions.</p></code>

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