GLOSSARY

What is a private IP address?

A private IP is used inside your local network and is not routable on the internet. Learn the private ranges and find your public IP free.

A private IP address is one reserved for use inside a local network — like 192.168.1.10 — and is not routable on the public internet. Many devices share a single public IP through your router using NAT.

The private ranges

Three blocks are reserved for private use: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Any address in these ranges only has meaning within a local network, which is why the same 192.168.1.1 exists in millions of homes at once. Routers translate between private and public addresses via NAT.

Private vs public

Your device uses a private IP to talk to your router and other local devices; the router presents one public IP to the internet on their behalf. Websites only ever see the public IP — check yours with a What’s-my-IP tool.

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FAQ

Is 192.168.1.1 a private IP?›
Yes — it is in the 192.168.0.0/16 private range, commonly a home router’s address.
Can a website see my private IP?›
No — it only sees your public IP. The private one exists only on your local network.

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