Quick answer
An IP address is a numerical address used to identify a network interface and route data. IPv4 addresses often look like 192.0.2.1, while IPv6 uses a longer hexadecimal form.
Original example
A public address and a local address
A laptop might use a private address such as 192.168.1.20 inside a home network, while websites see the public address used by the router or internet provider. They serve related but different routing scopes.
How IP addresses work
Routers read IP addressing information to forward packets toward their destination. Addresses can be assigned temporarily or remain relatively stable, depending on the network setup.
An IP address can suggest a network provider and approximate region, but it is not the same as a person's identity or an exact street address.
Common misunderstandings
- An IP address does not normally reveal an exact home address by itself.
- A device can have different private and public-facing IP addresses.
Related answers
Sources
- IP address - MDN Web Docs, accessed 2026-10-30
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