A MAC address is a unique identifier assigned to a network interface card (NIC). The MAC is hard-coded to the NIC at the time of manufacture.
How do you get the MAC address for a computer?
Open Windows Command Prompt and type the following command:
ipconfig /all
This will display a result similar to the following:
C:\>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Kags_PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Desktop Adapter
Physical Address. . . . . . . . . : 08-00-27-37-10-55
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::805:214b:df40:963a%10(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.2.15(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, August 03, 2011 9:42:47 AM
Lease Expires . . . . . . . . . . : Thursday, August 04, 2011 9:42:48 AM
Default Gateway . . . . . . . . . : 10.0.2.2
DHCP Server . . . . . . . . . . . : 10.0.2.2
DHCPv6 IAID . . . . . . . . . . . : 235405351
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-20-8F-1A-47-08-00-27-37-10-55
DNS Servers . . . . . . . . . . . : 10.0.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
C:\>
The 12-digit number next to the Phsyical Address is the MAC address.
Physical Address. . . . . . . . . : 08-00-27-37-10-55`
You can also run getmac from the command prompt to list MAC addresses and network protocols for all network interfaces in each computer.
C:\>getmac
Physical Address Transport Name
=================== ==========================================================
08-00-27-37-10-55 \Device\Tcpip_{1CEA5651-463B-48C6-B70C-0D14EC1B252E}
00-FF-C0-1C-84-CE \Device\Tcpip_{C01C84CE-DA0B-4318-95EA-AB6FAC56114F}
C:\>