An IP, or Internet Protocol, address is a unique number assigned to your computer that allows it to connect to the Internet and be recognized by your ISP, or Internet Service Provider, and other machines on the Web. The IP address contains four numbers separated by periods -- for example, 184.108.40.206. It takes just a few clicks to find the IP address currently assigned to your Mac.
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Click the Apple logo in the upper left corner of the menu bar at the top of the screen.
Click "System Preferences..."
Click "Network" in the "Internet & Wireless" field. Your Mac's IP address is displayed under "Status."