What DNS Server Does Azure Use?


Heather Bennett

In the world of cloud computing, Azure is a prominent player that offers a wide range of services and solutions. When working with Azure, understanding the underlying infrastructure is essential to optimize performance and ensure smooth operations. One critical component of Azure’s infrastructure is the DNS server.

What is a DNS Server?

DNS stands for Domain Name System. It is like the phonebook of the internet, translating human-readable domain names into machine-readable IP addresses. Whenever you type in a website address in your browser, the DNS server helps your computer find the correct IP address associated with that domain.

Azure, being a cloud platform, has its own DNS servers to handle these requests efficiently and provide seamless connectivity. The DNS servers used by Azure are known as Azure DNS.

Azure DNS

Azure DNS is a hosting service provided by Microsoft Azure that enables organizations to host their Domain Name System (DNS) domains in Azure. It provides high availability, fast performance, and scalability to handle millions of queries per second.

Underlying Technology:

  • Azure DNS uses Anycast networking for enhanced performance and resilience. Anycast allows multiple servers across different data centers to respond to queries from clients based on proximity.
  • Azure DNS also supports IPv6, ensuring compatibility with modern network infrastructures.

Benefits of Using Azure DNS

High Availability:

  • Azure DNS provides redundancy across multiple data centers, minimizing the risk of downtime due to server failures or maintenance activities.


  • Azure DNS can handle a massive number of queries per second, making it suitable for websites with high traffic volumes.


  • Azure DNS seamlessly integrates with other Azure services, such as Azure Traffic Manager and Azure CDN, to enhance the overall performance and reliability of your applications.


  • Azure DNS supports DNS Security Extensions (DNSSEC), which provides cryptographic authentication to ensure the integrity and authenticity of DNS responses.

Configuring Azure DNS

To start using Azure DNS, you need to perform the following steps:

  1. Create an Azure DNS zone: An Azure DNS zone is a container for hosting your domains. You can create a new zone or import an existing domain into Azure.
  2. Configure your domain registrar: Update the nameservers provided by Azure DNS in your domain registrar’s settings. This step ensures that all DNS queries for your domain are directed to the Azure DNS servers.
  3. Create and manage records: Once your zone is set up, you can add various record types like A, CNAME, MX, or TXT records to map domain names to IP addresses or other resources.


Azure uses its own DNS servers called Azure DNS to efficiently handle domain name resolution. With features like high availability, scalability, and integration with other cloud services, Azure DNS provides reliable and performant DNS hosting for organizations using Microsoft Azure. By understanding the underlying technology and configuring the necessary settings, you can leverage the power of Azure DNS to optimize your applications’ connectivity and deliver a seamless experience to your users.

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