Static vs Dynamic IP Addresses
Dynamic IP
A DHCP server leases an IP automatically on each connection. Home and most office devices use this. It is easy to manage, but the address can change — not ideal for public servers.
Static IP
A manually fixed address. Used for servers, network gear and VPN endpoints. Because it never changes, it suits DNS records and allow-list access control.
| Dynamic | Static | |
|---|---|---|
| Assignment | Automatic (DHCP) | Manual |
| Changes | May change | Fixed |
| Best for | Client devices | Servers / always-on |
| Cost | Standard | Sometimes extra |
Public servers that need a fixed IP are usually set up alongside a TLS/SSL certificate. See the link at the bottom of the page for certificate options.