What Is a Static IP Address?
A static IP address is a fixed, permanent IP address that does not change over time. Unlike a dynamic IP that is reassigned by DHCP each time you connect, a static IP stays the same indefinitely. Static IPs are used by servers, businesses, and any situation where a consistent, predictable address is required.
Static vs Dynamic IP Comparison
| Property | Static IP | Dynamic IP |
|---|---|---|
| Changes on reconnect? | No - Permanent | Yes - Reassigned by DHCP |
| Assigned by | ISP manually or by contract | ISP's DHCP server automatically |
| Cost | Additional monthly fee (typically $5–$15/mo) | Included in standard plan |
| DNS hosting | Easy - Point A record to static IP | Requires dynamic DNS service (DDNS) |
| Remote access reliability | High | Low - IP may change |
| Privacy | Lower - IP permanently tied to you | Higher - IP rotates periodically |
| Blacklist risk | Higher - Persistent identity makes it a target | Lower - IP rotates after incidents |
| Typical use | Web servers, VPN endpoints, VoIP, POS systems | Home broadband, mobile data |
Common Use Cases for Static IPs
- Running a web server, mail server, or game server from home or a data center.
- Establishing a site-to-site VPN where both endpoints must be known in advance.
- Remote desktop access to a home or office computer without dynamic DNS workarounds.
- IP-based access control lists (whitelisting) for corporate firewalls or cloud services.
- VoIP phone systems that require a stable IP for SIP trunk registration.
How to Get a Static IP
Contact your ISP and request a static IP address - Most residential and all business-tier plans offer this as an add-on. Alternatively, a business-grade VPN service can provide a dedicated static IP that you can use as your public-facing address without changing your home internet plan.