​How does Dynamic DNS work?

If you are an administrator of a network and you still don’t use Dynamic DNS, convince your boss to get it today! Yes, it will give you a hand you need and time to breathe! To administrate networks is a really tough job. Try to make it easier when possible. 

What is Dynamic DNS?

Dynamic DNS (DDNS) is a method for automatically updating the IP addresses (A or AAAA records) when hosts or devices change. It helps to keep a name server automatically updated. It updates almost in real-time and without the administrator doing it manually! Now for sure, you are interested!

Discover a great Dynamic DNS service!

IP address changes occur every time its lease expires. This is controlled by your Internet service provider (ISP). The reason is simple, ISPs work with pools of IP addresses. Consider how many millions of devices demand connection daily. And remember, a unique IP address is needed for every single device that wants to connect to the network. ISPs have to optimize the administration of this resource.

As regular users, we don’t realize this, but businesses, of course, do it. They provide services to users, and if they don’t check the lease time and make proper changes, clients could suffer downtime. So IP addresses that get expired must be replaced with a valid ones.

People who use a device as a server could use Dynamic DNS to secure its availability. If you are far from the device, you could not know the new address, therefore you could not access it.

To avoid downtime is the critical mission here. That’s why some businesses have at least a person in charge of permanently monitoring and manually executing these changes. But honestly, that’s a very tough and time-demanding task. Besides, human errors are common.

How does Dynamic DNS work?

Dynamic DNS monitors permanently the IP addresses to detect changes. Once a change happens, the DDNS updates the new IP address. 

Think you want to share service from a server you have connected to the Internet. It has to be also connected to the internal network, and it will communicate with the Internet through a network address translation (NAT) router. This NAT router supplies the server with an internal IP address. Then still, it’s needed to enable its external availability by performing port forwarding and getting a Portex (external port) and an Ipex (external IP address). At this point, your service will be already visible. And users will easily access it through the Internet. 

Since you are aware of the risks the IP changes mean for your business, basically the downtime, you look for DDNS with a professional provider. Create an account with that provider. Next, you enter a fixed name for your server (host) on the DDNS settings of the DNS provider. Then you enter the current IP. Now, what is missing is to enter your account (DDNS service provider) and password within the router (NAT settings), and order the NAT to update it, and inform the DNS server automatically. 

Benefits of Dynamic DNS.

  • It’s easy to install and use.
  • The automation of monitoring IP addresses changes and updating to the new ones means more time for administrators to execute other vital tasks.
  • Automation reduces human errors.
  • It’s very affordable and even free with some providers. You can also solve this risk of downtime that IP address changes cause by getting a static IP address. But to own its exclusivity is expensive.


Dynamic DNS is an ally that every administrator should count on. Try it now. You won’t regret it!

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