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It is important to note that manufacturers sometimes use different names to describe the MAC address, such as Hardware ID, Physical Address, Wireless ID, Wi-Fi Address, etc. In general, you will find MAC addresses in the system settings, general information, or network settings/status of your device. Occasionally, the MAC address is printed on a label affixed to the bottom of a device. So if your laptop has both an Ethernet port and Wi-Fi built-in, you will see two MAC addresses in the system configuration. For each network interface in your device, there is a unique MAC address associated with it. Can a device have more than one MAC address? The MAC address is a 12 digit hexadecimal number that is most often displayed with a colon or hypen separating every two digits (an octet), making it easier to read.Įxample: A MAC address of 2c549188c9e3 is typically displayed as 2C:54:91:88:C9:E3 or 2c-54-91-88-c9-e3. The NIC is where you make your physical connection to the network, by plugging in an Ethernet cable or connecting to a WiFi signal. The MAC address is tied to the Network Interface Controller (NIC), a subcomponent of the larger device. Just like each house has it's own postal address, every device connected on a network has a Media Access Control (MAC) address, that uniquely identifies it.

You will see a list of all the network interfaces with their MAC addresses (Ethernet Address).This is a MAC Address What's a MAC Address and how do I find it?.

Go to Utilities (Finder > Utilities OR command + shift + u) and start the Terminal app.

You should see the MAC address in this format 00:00:00:00:00:00 following HWaddr

In the terminal, type ifconfig and press ENTER.

How to find the MAC address in Unix or Linux You should see the MAC address in this format 00:00:00:00:00:00

In the DOS prompt, type ipconfig /all and press ENTER.

Read my article about MAC addresses How to find the MAC address How to find the MAC address in Windows IAB is also known as Individual Address Blocks and the number of addresses is 2 24 or 16 million. MA-S, or MAC Address Block Small, is a block of MAC addresses where the maximum of addresses is 2 12 or 4096. MA-M, or MAC Address Block Medium, is a block of MAC addresses where the maximum number of addresses is 2 20 or 1 million.

MA-L, or MAC Address Block Large is a block of MAC addresses where the maximum number of addresses is 2 24 or 16 million.

The OUI is basically the first three octets of a MAC address. They are purchased and assigned by the IEEE.

They can either be written in either of these formats:Īn OUI is a 24-bit number that uniquely identifies a vendor or manufacturer. It is a 48-bit number (12 hexadecimal characters). Coming up: MAC address API What is a MAC address? What is OUI? What are MA-L, MA-M, MA-S?Ī MAC address is a unique identifier for network interfaces.