What is the difference between a static IP address and a dynamic IP address? When a device is assigned a static IP address, the address does not change. When a device is assigned a dynamic IP address it is exactly that: dynamic. It could change frequently or not change for over a year. It really depends on how the DHCP server that’s assigned to the IPs is set up. To clarify, most devices use dynamic IP addresses.
For businesses that host their own website or internet services, a static IP address is the best option. They even have the advantage when remote workers log into work via VPN. Consumers are usually fine with dynamic IP addresses.
So, for what should a person use a static IP address versus a dynamic IP address? There are advantages and disadvantages of using both a static IP address and dynamic IP address.
Some advantages of a static IP address are faster internet speed and easy remote access. Communication is usually hassle free, and you have the ability for simple server hosting. On the other hand, the disadvantages of a static IP address are that the cost can be expensive, the setup is difficult and complex, and it can be known for lack of security.
Some advantages of a dynamic IP address are that the cost of price associated with the ISP is usually lower, since being associated with ISP, it is an automated configuration. But the disadvantages of a dynamic IP address are that since it depends on the ISP, there is the issue of more downtime and also the inability for remote access capabilities.
Check If Using Static IP Address or Dynamic IP Address
It is easy to check if you have a static IP address or a dynamic IP address.
With a Windows computer:
Type ipconfig /all within a command prompt
Find the “DHCP Enabled” text and if NO you have a static IP address and if YES you have a dynamic IP address.
With a Mac computer:
Under system preferences, select Network and then “Advanced”, then go to TCP/IP. Under “Configure IPv4” if you see MANUALLY you have a static IP address and if you see USING DHCP you have a dynamic IP address.
To summarize, if you don’t really rely on a constant IP address, you can have the advantages of using a dynamic IP address. However, if you have a business with a website or Internet service and it's best not to have any interruptions, then a static IP address would be the best choice.