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MAC Address

Frequently Asked Question

MAC Address


Media Access Control, or MAC address, uses 12 hexadecimal numbers and can only be written with the characters, 0 – 9 and  A – F

The MAC address is usually written in the form:

MM:MM:MM:SS:SS:SS  (note that M & S are not valid hexadecimal characters, just being used for representation)


The first half of a MAC address contains the ID number of the adapter manufacturer.

The second half of a MAC address represents the serial number assigned to the adapter by the manufacturer.


In the example, 00:A0:C9:14:C8:29

The prefix 00A0C9 is an Intel Corporation identifier

Locating the MAC address on your PC

Locating the MAC address on your Macintosh