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Dictionary · Networking Fundamentals

IP Address

IP — Internet Protocol

Addressing · Beginner

A numeric label assigned to a network interface so other hosts can deliver traffic to it. The familiar versions are 32 bits and 128 bits long.

It works like a mailing address for a device on an IP network. The network portion says which neighborhood the device is in, and the host portion identifies the device inside it.

Example: A laptop might use 192.168.1.25 on a home network, while a public web server uses a different address that routes across the Internet.

Common misconception

  • The label identifies an interface, not the whole computer forever. A host can have several, and they can change.

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