This means that 2 24 (= 16.777.216) unique OUAs can be assigned per OUI. 1 Type cmd into the Windows Search bar, right-click Command prompt, and then select Run as administrator. Bit 25-48 (network adapter identifier): Bits 25 to 48 provide device manufacturers with 24 bits for assigning a unique hardware identifier (organizationally unique address, OUA). If you can log in to the computer remotely with administrative access (and it's also running Windows), you can use the getmac command to view every MAC address on that device.A corresponding service is available, for example, on. The assignment of OUIs is usually public and can be determined via databases. Bit 3–24 (manufacturer identification): Bits 3 to 24 encode an identifier (organizationally unique identifier, OUI), which is assigned exclusively to hardware manufacturers by IEEE.(You may need to scroll down.) Click the Info button to the right of a service that’s turned on. Addresses that are only locally unique are called locally administered address (LAA) and are marked with U/L = 1. On your Mac, choose Apple menu > System Settings, click General in the sidebar, then click Sharing on the right. If U/L = 0, the address is valid worldwide as a universally administered address (UAA). Bit 2 (registry): The second bit of the MAC address indicates whether it is an address with global validity (universal) or whether the address has been assigned locally (local).Multicast addresses are identified by I/G = 1 and are addressed to several receivers. If I/G = 0, it is a unicast address for a single network adapter. This bit is called I/G (short for individual/group). Bit 1 (receiver): The first bit of the MAC address specifies whether it is an individual or group address.The bit sequence of each MAC address is divided into 4 areas, each of which encodes different information. The quickest way to find the MAC address is through the command prompt.

How to check mac address