Find the vendor / manufacturer of a device by its MAC Address with our lookup tool or automate it with our API!.The Wireshark OUI lookup tool provides an easy way to look up OUIs and other MAC address prefi It uses the Wireshark manufacturer database, which is a .To find the MAC address in Windows Click on Start button, type cmd and press ENTER. In the CMD prompt, type ipconfig /all and press ENTER. You will see the MAC address following Physical Address 00-00-00-00-00-00.. - How to find the MAC address in Windows. Go to the DOS prompt. Click on Start button, select Run. Type cmd and press ENTER. In the DOS prompt, type ipconfig /all and press ENTER. You should see the MAC address in this format 00:00:00:00:00:00..