Dynamic DNS – What is it?
Dynamic DNS, also commonly called DDNS, serves to update your name server automatically regularly. It is an extremely helpful service. Every time your IP address (IPv4 or IPv6) changes, the corresponding A record or AAAA record is going to be updated. The main benefit of implementing it is that it is a completely automatic process. That saves you or your administrator precious time and energy for doing it manually.
The Internet Service Providers (ISPs) are constantly changing the IP addresses because that is the easier way for them to manage their large networks. Each device that wants to connect to its networks requires an absolutely unique IP address. So, that is their way of guaranteeing that they won’t run out of them.
How does Dynamic DNS work?
When you want to use Dynamic DNS, you should choose a reliable DNS hosting provider that offers such a service. Once you find the provider that suits your needs, you should run their software on the host device or router. This specific software reaches the Dynamic DNS service provider in case the IP addresses are changed by the ISP. Then, the DNS hosting provider modifies the A record or AAAA record by replacing the old IP address with the new one.
In situations when a network is operating with a static IP address, there is no possibility to use a DDNS service. The reason for that is simple. Once a domain name with a static IP address is requested, there is no need for additional changes. Why? Because these IP addresses never change. Yet, they are very expensive.
For what is it used?
If you desire to maintain a server on a network and the IP address is dynamic and public, you should make sure that it is going to connect without any issues. You should not worry! Dynamic DNS is going to help you in such a situation. Additionally, you can use it for:
Surveillance system. Dynamic DNS is a great solution in this case. You can set and install all of the desired CCTV cameras, sensors, and other alarm components. Moreover, they are going to operate constantly without any interruptions when the IP address changes.
Home/office server. It is not necessary to spend extra for a static IP address for your home or office server. You just have to implement Dynamic DNS if you desire to host a server application, like an email server, web hosting, storage, and so on. It is the perfect solution.
As we mentioned, Dynamic DNS is a very beneficial service. So, let’s see which are the main advantages of using it.
- It is simple and an easy process to install and use it.
- DDNS automatically changes the IP addresses and monitors for updates. That is a huge advantage for you or your administrator. It gives the opportunity for extra time to focus on other crucially important tasks.
- The chance is less for a human mistake due to the fact that it provides automation.
- It is either very cheap or even free with some DNS hosting providers. Additionally, you can get a static IP address and solve the risk of occurring downtime that IP address changes cause. However, owning a particular IP address exclusively is a pretty expensive option.