Monthly Archives: June 2022

IPv4: What does it mean?

The topic of today’s article is exactly the IPv4. And if you desire to learn more about its definition, what it looks like, and how to check it, great! You are in the right place. So let’s not waste any more time and explore it!

Introduction to IPv4 

The fourth IP version is IPv4. On the Internet and other packet-switched networks, it is one of the fundamental protocols of standards-based internetworking techniques. In 1982, the Atlantic Packet Satellite Network (SATNET), a satellite network that was a part of the early development of the internet, implemented Internet Protocol version 4 for the first time. To this day, we still use it.


When a device connects to the Internet (whether it’s a switch, PC, or other devices), it’s given a unique numerical IP address, such as Furthermore, IPv4 employs a 32-bit address scheme. Each section can have a number between 0 and 255, for a total of 4,294,967,296 (232) possible addresses. Each number represents an 8-bit field corresponding to one byte of an IPv4 address.

So the growing number of Internet users leads to the exhaustion of IPv4 addresses. That is also why IPv6, the new Internet addressing system, is being deployed to meet the demand for more Internet addresses.

How to check IPv4?

It is simple to find your IP address. A dynamic IP address is one that is constantly changing. The steps below will assist you in determining your computer’s IP address:

  • Linux

Begin by opening a terminal window. To check IPv4, use the commands “hostname -I,” “ip addr,” and “ifconfig.” These commands each return the Internet Protocol version 4.

  • macOS

Launch the Terminal application. Use the macOS Terminal command curl to obtain your public IP address. To find the private Internet Protocol version 4 address, type ipconfig getifaddr en0.

  • Windows

To open the Command Prompt in Windows, go to the Start menu and type cmd. And after that, in the Command Prompt, type ipconfig and press Enter. The program’s output will include your IP address.


We might assume that IPv4 was the first Internet Protocol version to be widely adopted and that it accounted for the bulk of Internet traffic in use today. Perhaps IPv6 represents the present and IPv4 the past. We’ll gradually start saying goodbye to the current one and welcoming the new one.

Dynamic DNS: Why is it important?

Have you ever heard about Dynamic DNS and how important it is? If not, no worries. You are in the right place. Why? Because today’s article focuses on the significance of the Dynamic DNS, its purpose, and how it operates. So, let’s start exploring it.

Dynamic DNS purpose

Dynamic DNS (DDNS) automatically updates and modifies a host’s IP address. As a result, visitors will be able to access your website even if the IP address changes due to it.

DDNS is a simple solution that allows you to connect to your various hosted services when your ISP changes your IP address (IPv4 or IPv6). For example, let’s imagine you have a web hosting server, a database server, and a mail server, or you use your home network to connect your CCTV cameras to the Internet using DDNS.

Changing IP addresses makes it easier for ISPs to manage their networks. As a result, they only rent them to their customers for a limited period. Instead, they delegate this responsibility to a DHCP server for this purpose. As a result, when the time period expires, the clients are assigned a new IP address.

The way it works

DDNS works by mapping custom host names to specific network devices/resources. For example, let’s imagine you want to be able to view a security camera mounted on your front door from anywhere on the planet. Of course, you’ll need an IP address to achieve this, which will allow you to connect to the camera via the Internet.

If your ISP changes the IP address, the old IP address you used to access the camera will no longer operate.

When you use a DDNS service to map a fixed, custom hostname to a resource, you can be confident that you’ll always have access to it, even if the underlying IP address changes.

Why do you need to benefit from Dynamic DNS?

The key motivation is straightforward: making something available online via Dynamic DNS is less expensive. Yes, you can receive static IP addresses for each connected device, but at what cost? IPv4 addresses are becoming more costly and challenging to come by. Even if you pay for a DNS service plan, it will still be significantly less expensive than paying for static IP addresses if you’re curious.

Another critical factor to consider is that it is quite straightforward to use. Setting up DDNS on your router, for example, is comparable to setting up anything else. You go to the settings and fill in the required data. Creating an account on a DNS service and then creating a new host is, on the other hand, a reasonably simple and quick process.

In conclusion, Dynamic DNS is a more cost-effective and user-friendly option than purchasing static IP addresses.


DDNS is a fantastic service. Should you take advantage of it? It will save you money and function perfectly in most circumstances, so take it into consideration. Additionally, it may even be the sole reasonable answer to a problem in some situations. For example, suppose you wish to deliver services or connect and operate many devices, such as CCTV cameras, over the Internet. So yes, check it out. Good luck!