You can do this online by yourself – check for IEEE online database (Be attentive! OUI should be entered with a hyphen!). So, as you already may see, one can easily identify a device manufacturer by its MAC-address. These three octets are called OUI (ORGANIZATIONALLY UNIQUE IDENTIFIER). IEEE is the organization that provides manufacturers with source MAC-addresses range to be used in their products: for this, first three octets of a specific value are fixed for each manufacturer. Let’s come up with MAC-address example: 00:26:57:00:1f:02.Įach product, possessing communication interface, has the unique MAC-address. Every 8 bits are separated either by a colon (:) or a hyphen (-). MAC-address consists of 48 bits represented in hexadecimal format.
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