What Is My IP Address

What Is an IP Address?

Your IP address is a unique number assigned to your device by your Internet Service Provider. It works like a return address for internet traffic — every time you visit a website, your IP tells that site where to send data back. Without it, nothing on the internet would know how to reach you.

There are two formats: IPv4 addresses (like 192.168.1.1) use four groups of numbers and have been the standard since the 1980s. IPv6 addresses (like 2001:0db8:85a3::8a2e:0370:7334) are longer and were created because the world is running out of IPv4 addresses. Most networks now support both.

Your public IP address — the one websites see — can reveal your approximate location, your ISP, and whether you’re connecting from a residential network, a data center, or through a VPN. Tools like our IP geolocation lookup cross-reference multiple databases to map these details.

How Does IP Geolocation Work?

IP geolocation determines a device’s approximate physical location based on its IP address. Providers like MaxMind and DB-IP maintain large databases that map IP ranges to geographic coordinates, ISPs, and autonomous systems. These databases are built from registry records (ARIN, RIPE, APNIC), network routing data, and direct contributions from ISPs.

Accuracy varies by what you’re looking for. Country-level detection is correct over 99% of the time. City-level accuracy typically falls between 50–80%, depending on the region and ISP. Rural areas and mobile networks tend to be less precise than urban broadband connections.

My IP Help cross-references MaxMind GeoLite2 and DB-IP Lite to improve reliability. When one source lacks data — such as a postal code or timezone — the other often fills the gap. You can learn more about our methodology on the data sources page.

Public vs Private IP Addresses

Every device connected to the internet has two types of IP address. Your public IP is the address the outside world sees. It’s assigned by your ISP and shared by all devices on your home or office network through a router. Your private IP (usually starting with 192.168.x.x or 10.x.x.x) is used only within your local network and is invisible to websites.

When you use this page, we detect your public IP — the one your router presents to the internet. If you’re connected through a VPN or proxy, you’ll see the VPN server’s IP instead of your ISP’s. You can verify this by checking your IP with and without your VPN enabled using our IP lookup tool.

To find your private IP address on your local network, check your device’s network settings. On Windows, run ipconfig in Command Prompt. On Mac or Linux, use ifconfig or ip addr in Terminal.

How to Protect Your IP Address

Your IP address alone cannot reveal your exact street address or identity, but it does expose your general location and ISP. Combined with other data, it can be used for targeted advertising, content restrictions, or in some cases, network attacks.

A few practical steps to limit your IP exposure: use a reputable VPN service to mask your real IP behind the VPN server’s address. Enable your browser’s DNS-over-HTTPS setting to prevent your ISP from logging your browsing activity. And review which apps and services have access to your network information.

You can use our HTTP header checker to see exactly what information your browser sends with every request, or run an SSL certificate check to verify that sites you visit are encrypting your connection properly.

Why Check Your IP Address?

Knowing your public IP is useful in several everyday situations. If you’re setting up a firewall or remote access, you need your exact public IP to create allow-list rules. If you manage an email server, checking your IP against blacklists helps diagnose delivery problems before they affect your users.

For anyone using a VPN or proxy, a quick IP check confirms whether your traffic is actually being routed through the intended server. If your real IP leaks through, your location and ISP remain visible to every site you visit.

Network professionals use IP lookups for troubleshooting and auditing — identifying which ISP or autonomous system a problematic IP belongs to, running DNS lookups to verify records, or using visual traceroute to map the path packets take across the internet.

Frequently Asked Questions