This means that 2 24 (= 16.777.216) unique OUAs can be assigned per OUI. Type the command ipconfig/all and execute it by pressing Enter. Run it and a command prompt window will appear. Initiate an instance by clicking on the Start button and typing CMD. The quickest way to look at MAC addresses on a Windows PC is by using the command prompt.
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). Finding the MAC addresses on a Windows 10 PC.Parse the output of the process like in option 1. First Ping the IP to make sure your NIC caches the command in its ARP table, then use the DOS command arp -a. Create a process, call this command, parse the output. A corresponding service is available, for example, on . Here are some options: Use the DOS command nbtstat -a. 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.Addresses that are only locally unique are called locally administered address (LAA) and are marked with U/L = 1. If U/L = 0, the address is valid worldwide as a universally administered address (UAA). Type ipconfig /all and press Enter to pull up the MAC address on Windows 10 along with the IP address and other networking details. 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. NOTE: You may also open Command Prompt by pressing Windows key + R, then typing cmd and pressing Enter. Click on the Command Prompt, displayed in the search results. Type Command Prompt in the search box and press Enter. If I/G = 0, it is a unicast address for a single network adapter. To find the MAC Address on a Windows 7 or 10 Computer: 1. 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.