How to find your IP and MAC address on an Apple Mac. Finding out your Apple Mac's Internet Protocol (IP) and Mac or physical addresses couldn't be simpler. Step 1: IP address. Head on up to the Apple menu in the top left of the screen and click it. Go to System Preferences. Once that's open, click on the network icon. You should see your IP address under the method through which you are connected to the Internet. Sometimes that's airport or it might be Ethernet, etc. Step 2: MAC address. Go to the Apple menu in the top left of the screen and click it. Then, click on "About This Mac". Once the dialog window opens, click on "More Info" and you'll find your MAC address under the network section. Done.