A MAC address, also known as a Media Access Control address, is a unique identifier assigned to network interface controllers (NICs) for use as a network address in communications within a network segment.
MAC addresses are typically assigned by the manufacturer of the NIC and consist of 6 pairs of hexadecimal digits (0-9 and A-F), separated by colons or hyphens. For example, a MAC address might look like this: 00:11:22:33:44:55.
MAC addresses are used in Ethernet and Wi-Fi networks to uniquely identify devices on the network. They are used by network protocols to direct network traffic to the correct destination.
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