MAC Address Lookup

Find the vendor name of a device by entering an OUI or a MAC address

How do I find the MAC Address on Mac OS X?

Open System Preferences .
Select Network .
In the left of the "Network" window that opens, click the name of your connection ( AirPort , Wi-Fi , or Ethernet ).
Click Advanced .
Go to the Hardware tab.
The address is the string of letters and numbers next to MAC Address