Networking Basics

Static vs Dynamic IP: What's the Difference?

Static vs Dynamic IP

A static IP stays the same and is usually provided by an ISP or cloud provider; a dynamic IP changes periodically or after reconnection. Public IPv4 space is scarce, so consumer broadband is dynamic by default.

When You Need a Static IP

Self-hosted websites or game servers that need stable inbound access.
Remote access to home devices, combined with port forwarding.
Business lines, NVRs, and mail servers requiring reliable inbound connections.

No Static IP? Use DDNS

Dynamic DNS (DDNS) binds a domain name to a changing IP: a client reports the new IP regularly and the domain updates automatically. You can reach home devices via a fixed domain even without a static IP - as long as you have a public IP.

Use "My IP" in the toolbox to see your current public IP; check again after a few days to see if it is dynamic. →

FAQ

Does my home broadband have a static IP?

Usually not; consumer broadband is mostly dynamic. Some ISPs offer dynamic public IPs, which is enough for DDNS.

Is a static IP safer?

Security depends on configuration, not the IP type. Static IPs are more convenient for servers but are also fixed targets.