Difference between Static IP and Dynamic IP

Every device connected to a network, whether it’s a computer, phone, or server, needs a unique identifier called an IP address. These IP addresses allow devices to communicate with each other across local or global networks like the internet. IP addresses can be assigned in two ways: statically or dynamically. Understanding the difference between Static IP and Dynamic IP is crucial for anyone managing networks, hosting services, or just trying to troubleshoot connectivity issues.

What is a Static IP?

A Static IP address is a fixed IP address that does not change over time. Once assigned to a device, it remains the same unless manually changed. Static IPs are often used for servers, printers, and devices that need consistent access or remote connections. Because they are predictable and permanent, they are ideal for services that require a stable connection.

What is a Dynamic IP?

A Dynamic IP address is automatically assigned by a network’s DHCP (Dynamic Host Configuration Protocol) server and can change each time the device connects to the network. This approach is more flexible and commonly used in home and small business networks. It reduces the need for manual configuration and is generally more cost-effective.

Static IP  vs Dynamic IP

	Static IP	Dynamic IP
Definition	Permanent IP address manually assigned to a device	Temporary IP address automatically assigned by DHCP
Assignment	Manually assigned by network administrator or ISP	Assigned dynamically by DHCP server
Configuration	Needs manual setup and maintenance	Automatic and requires minimal configuration
Stability	Highly stable; does not change over time	May change periodically or with each network connection
Security Risk	Higher risk; easier to target due to fixed address	Lower risk; changes make it harder to target
Cost	Generally more expensive; may require additional fees	Usually free or included in standard service
Speed	No impact on speed; but consistent access can improve performance	No direct impact on speed; might be slightly slower to reconnect
Example	Web servers, email servers, CCTV systems	Home routers, smartphones, laptops