The first three pairs of digits in the MAC address are called the OUI (Organizational Unique Identifier), which identifies the company that manufactured or sold the device. (Hexadecimal digits can only include the numbers 0-9 and letters A-F.) A MAC address takes the form of six pairs of hexadecimal digits, usually separated by colons or dashes, and will look something like this-01:1F:33:69:BC:14. While an IP address can potentially be assigned to any device, a MAC address is “burned in” to a given device from the factory. What Is a MAC Address?Ī MAC address, sometimes referred to as a hardware address or physical address, is an ID code that’s assigned to a network adapter or any device with built-in networking capability (say, a printer). But there’s another type of network address called a MAC address that actually forms the foundation upon which IP address communication is built, at least where local area networks are concerned. When you think about networking, IP addresses are probably the first things that come to mind.
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