Static vs Dynamic IP Addresses
Updated June 3, 2026
Public IP addresses come in two flavours: dynamic (the default for most home connections) and static (fixed, usually paid). Here's what each means and how to decide whether you need a static one.
Dynamic IP addresses
A dynamic IP is assigned automatically by your ISP from a pool of available addresses, and it can change from time to time — after a router reboot, a lease renewal, or at the ISP's discretion. This is what the vast majority of home users have.
Pros: no setup, no extra cost, and a changing address offers a small privacy benefit. Cons: not ideal for hosting services, because the address you share today may be different tomorrow.
If you've noticed the IP on our home page changing between visits, a dynamic address is usually why.
Static IP addresses
A static IP never changes. It's manually assigned and stays with your connection until you change it. ISPs typically offer them as a paid add-on, mostly to businesses.
Pros: reliable for hosting and remote access; easier DNS configuration. Cons: costs extra, and a permanent address is marginally easier to track and target.
When do you actually need a static IP?
For everyday browsing, streaming and gaming, a dynamic IP is perfectly fine. Consider a static IP if you:
- Host a server (website, game server, mail server) that others reach by address.
- Run remote access to a home or office machine (e.g. a security camera or NAS).
- Need to whitelist your address for a corporate VPN or service.
For most of these, an alternative is Dynamic DNS (DDNS) — a service that maps a fixed hostname to your changing dynamic IP, giving you many of the benefits of a static IP without the cost.
Static vs dynamic at a glance
| | Dynamic IP | Static IP | |---|---|---| | Changes over time | Yes | No | | Cost | Free (default) | Usually paid | | Best for | Everyday use | Hosting, remote access | | Setup | Automatic | Manual |
Key takeaways
- Most home connections use free, changing dynamic IPs.
- Static IPs stay fixed and suit hosting or remote access, usually for a fee.
- Dynamic DNS is a cheaper middle ground if you only need a stable hostname.
- This is separate from public vs private IP — both dynamic and static refer to your public address.