How to find your computer's IP address
Windows NT, 2000, XP, and Vista
To see what IP address your computer is using:
- Click Start, and then select All Programs (XP and Vista) or Programs (NT and 2000).
- Select Accessories, and then Command Prompt (2000, XP, and Vista), or Command Prompt (NT).
- At the command prompt, enter: ipconfig
The IP address (or IPv4 address is you are using Windows Vista) will be a series of numbers following the pattern xxx.xxx.xxx.xxx, for example, 156.56.27.32.
- To close the command prompt, enter: exit
Mac OS or Mac OS X
To find the IP address of a Mac OS or Mac OS X computer:
OS X 10.5
- From the Apple menu, select System Preferences... . In System Preferences, from the View menu, select Network.
- In the Network preference window, click a network port (e.g., Ethernet, AirPort, Modem). If you are connected, you'll see its IP address under "Status:".
OS X 10.3 or 10.4
- From the Apple menu, select Location and then Network Preferences... .
- In the Network Preference window, next to "Show:", select Network Status. You'll see your network status and your IP address displayed.
OS X 10.2.x
- From the Apple menu, select Location and then Network Preferences... .
- In the Network Preference window, next to "Show:", select how you're connected to the Internet (e.g., Built-in Ethernet, AirPort, Internal Modem).
- Click the TCP/IP tab; the IP address is next to "IP Address:".
OS X 10.1.x and earlier
- From the Apple menu, select System Preferences... .
- In the System Preferences window, click Sharing. If you don't see its icon, click Show All first.
- Your IP address will be at the bottom of the window.
Mac OS 9.x or earlier
- From the Apple menu, select Control Panels, and then select TCP/IP.
- You'll see your IP address in the TCP/IP window.

