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What is an IP address?

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Quick answer

An IP address is a unique number that identifies a device on a network, like a postal address for the internet. It tells data where to go, so the right web page or message reaches the right computer or phone.

Key things to understand

  1. It's a unique label that identifies a device on a network.
  2. It works like a mailing address so data finds the right device.
  3. IPv4 looks like 192.168.1.1; IPv6 is longer to allow more devices.
  4. Addresses can be public (on the internet) or private (on a local network).

People also ask

What is an IP address in simple terms?
A unique number that identifies your device online, so information knows where to be delivered.
What's the difference between IPv4 and IPv6?
IPv4 uses shorter numbers and is running out; IPv6 is far longer, allowing vastly more devices.
Can an IP address reveal my location?
It can suggest your general area and internet provider, but not a precise street address by itself.

Part of the guide: How the Internet Works →