A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used for numerous network technologies and most IEEE 802 network technologies, including Ethernet. Logically, MAC addresses are used in the Media Access Control protocol sub-layer of the OSI reference model.
MAC addresses are most often assigned by the manufacturer of a network interface card (NIC) and are stored in its hardware, the card's read-only memory, or some other firmware mechanism. If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number and may be referred to as the burned-in address. It may also be known as an Ethernet hardware address (EHA), hardware address or physical address. A network node may have multiple NICs and will then have one unique MAC address per NIC.
HOW to Find out Your MAC address?
Method 1
Click on Start>>Run>>CMD>>Ipconfig/all
A mac address contains 6 pairs of digits which is hexadecimal digits,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. For example, a MAC address that begins with 00:1F:33 denotes a Netgear product. The last three pairs of digits are specific to the device and can be more or less considered a serial number of sorts. Together, the two parts of the MAC address form an ID that's unique to a particular device.
Method 2
This method applicable only if you connected to a network
Open Network connection
Select your Local Area Connection and right-click, select "Status".
In "Support" tab, click "Details".
Your MAC Address is the "Physical Address" listed in Network Connection Details.
Method-3
if u are using windows Xp start>>run>>getmac
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