Your public IP: your identity on the Internet
Every device connected to the Internet has a public IP address assigned by the ISP. This IP is visible to all websites and services you visit: it is like your postal address on the Internet. Knowing your own public IP is useful for multiple reasons: configuring remote access to devices (VPN, SSH, cameras), verifying that your VPN is active, configuring firewall whitelists, diagnosing network problems, and checking what location web services associate with your connection.
Our What Is My IP tool instantly shows your public IP address along with detailed information: geolocation (country, city), ISP, ASN, hostname (reverse DNS), and connection type. It is the fastest tool to answer the fundamental question: "how does the Internet see me right now?".
VPN verification and privacy
The most common use case is VPN verification. With an active VPN, your public IP should change: showing the VPN server's IP, with ISP and location matching the VPN provider. If your IP and location do not change with the VPN active, there is a problem: the VPN might not be connected, it could have a DNS leak, or your traffic could be bypassing the VPN tunnel. For more detail on your IP location, use IP Geolocation for comprehensive information.
Dynamic vs static IP
Most residential connections use dynamic IPs: your ISP assigns an IP that can change periodically (typically on every router restart or after a DHCP lease period). For services that require a fixed IP (web server, VPN, remote access), a static IP is needed, usually available as an additional option from your ISP. Check whether your IP changes by periodically verifying with our tool.
For those managing servers, knowing your public IP is essential for firewall and DNS configuration. If your server is behind a NAT, the IP the server sees locally (ifconfig) is different from the public IP visible from the outside. Use What Is My IP from the server to get the actual public IP, then verify that reverse DNS is configured with Reverse DNS and that the IP is not blacklisted with Blacklist Check.
A note on privacy: your public IP reveals your approximate location, your ISP, and can be used to track your activity across different websites (if you don't use a VPN). Websites, analytics services, and advertising networks can correlate your visits using your IP as an identifier. For greater privacy, use a reliable VPN that does not keep logs, and regularly verify your IP to make sure the protection is active.