What Is an IP Address?
An IP address is the number a network uses to deliver traffic to the right place. It is not a personal identity by itself, but it can reveal useful routing and provider context.
Updated 2026-08-08What an IP address does
When your browser opens a website, packets need a destination and a return path. IP addresses provide those network-level locations.
A domain name such as example.com is easier for people to remember, but DNS eventually maps that name to one or more IP addresses that computers can route.
Example
A home router might have a private address such as 192.168.1.1 inside your network, while the outside internet sees one public address assigned by the ISP.
An IP lookup can show the public address, approximate region, ISP or ASN. It cannot reliably identify a person or exact street address.
When you may need it
Check your IP when allowlisting an office connection, troubleshooting VPN behavior, investigating suspicious log entries or confirming whether IPv6 is active.
Quick answers
Is my IP address always unique?
A public IP address should be unique on the public internet at a point in time. Private addresses are reused inside many local networks.