Anycast DNS: Definition & Benefits

You still don’t know what Anycast DNS is? If yes, don’t worry. In this article, we will explain its definition and how it functions. Then, finally, we will see its fundamental benefits. Let’s now explore this exciting topic.

What is Anycast DNS definition?

Anycast DNS is a DNS routing technique that uses several name servers to provide a single IP address. Anycast DNS is designed to distribute nameservers around various regions on the planet and offer users nearby servers. The nameserver with the same IP address nearest to the user when they request a domain will respond to their DNS query. The domain resolution process moves faster thanks to the query’s shorter route, which minimizes latency.

How does it function?

When a device connects to the Internet, it uses its IP address to communicate with a server. One-on-one communication is the most fundamental type of communication. It’s okay, and there’s a chance that DNS resolution will work. However, specific requests will have to travel great distances to reach a distant server if there is only one server that holds the necessary information (A or AAAA record). The user won’t get the desired response if the server is down. The question won’t get an answer.

Is Anycast DNS beneficial?

Anycast is a convenient service, as you can see. So, if you are still debating whether to implement it for your organization, here are the three reasons you ought to do so.

  1. The first is that configuration is straightforward. Because only one server needs to be configured, it is simple to set up. Additionally, the entire network can undergo the same alterations.
  2. The increased uptime is the second factor that should drive your decision. Although a server can crash, it is highly improbable that several servers will crash simultaneously. Your website’s uptime will increase, and users can access it whenever they want. The response time is also quicker. Your servers’ response times should be as soon as possible to minimize waiting. There is a slim chance that visitors will leave your website.
  3. Better security is the last one. DoS and DDoS attacks can take many forms, but they all target flood victims by making heavy traffic their weapon of choice. The technology employed to stop and protect against such attacks is typically sophisticated and expensive. Given Anycast DNS’s good at load-balancing, the abnormal traffic may be dispersed throughout the network without presenting a problem. If you employ this fantastic tactic, your security will be significantly stronger. Don’t make your website’s security for granted.


Anycast DNS, in general, is a method of preserving local traffic. By sending it to the nearest instance, you give your customers speedy and dependable service. Moreover, it will enhance your networking and is additionally simple to implement.