• Windows NT/2000/2003/XP
• Windows 95/98/ME
• DOS/Windows 3.11/Windows for Workgroups

• Macintosh OS X
• Macintosh OS w/ Open Transport (Pre-MacOS X)
• Macintosh OS w/ MacTCP (Pre-MacOS X)

• Linux
• Solaris/SunOS
• FreeBSD/NetBSD
• OpenBSD
• Caldera/SCO UnixWare/OpenUNIX
• HP-UX (HP UNIX)
• IRIX (SGI UNIX)
• NeXTStep (NeXT UNIX)
• AIX (IBM UNIX)
• Tru64 UNIX (Digital UNIX)

Windows NT/2000/2003/XP

• Open the command prompt
• From the command prompt type "ipconfig /all"
• (If the information scrolls off the screen you can type "ipconfig /all|more")
• Find the network adapter you want to know the MAC address of
• Locate the number next to Physical Address. This is your MAC address

 
Example "ipconfig /all" output:
 
 
 
Ethernet adapter Wired:
 
Connection-specific DNS Suffix  . : roundfile.com
 
Description . . . . . . . . . . . : ORiNOCO PC Card (5 Volt)
 
Physical Address. . . . . . . . . : <strong>00-02-2D-11-55-4D</strong>
 

Windows 95/98/ME

• Click the Start Menu, then select Run
• Type in "winipcfg" and click OK
• Select the appropriate Ethernet adapter
• Locate the number next to Adapter Address. This is your MAC address

Macintosh OS X

• Wired (MacOS 10.2 and earlier)
• From the dock, select System Preferences
• Select Network, Select Location, Select Interface
• Select TCP/IP Tab
• Locate the number next to the Ethernet Address. This is your MAC address
• Wired (MacOS 10.3 and later)
• From the dock, select System Preferences
• Select Network, Select Location, Select Interface
• Select Ethernet Tab
• Locate the number next to the Ethernet ID. This is your MAC address
• Wireless (AirPort)
• From the dock, select System Preferences
• Select Network, Select Location, Select Interface
• Select AirPort Tab
• Locate the number next to the AirPort ID. This is your MAC address

Macintosh OS w/ Open Transport (Pre-MacOS X)

• From the Apple Menu, select Control Panels
• Open either the Appletalk or the TCP/IP Control Panel
• From the Edit Menu, select User Mode
• Change the mode to Advanced or Admin
• Click the Info Button (lower left hand corner)
• An AppleTalk or TCP/IP window will pop up
• Locate the number next to the Hardware Address. This is your MAC address

Macintosh OS w/ MacTCP (Pre-MacOS X)

• Make sure CAPS Lock is not on
• Make sure the Macintosh is connected to an Ethernet network
• From the Apple Menu, select Control Panels
• Open the MacTCP Control Panel
• Hold down the Option Key and click the Ethernet icon
• Locate the number next to the Hardware Ethercard Address that appears beneath the icon. This is your MAC address

The MAC Address will be displayed in the form of 00 0D 93 13 51 1A.

Linux

• As the root user (or user with appropriate permissions)
• Type "ifconfig -a"
• From the displayed information, find eth0 (this is the default first Ethernet adapter)
• Locate the number next to the HWaddr. This is your MAC address

 
<strong>Example "ifconfig -a" output:</strong>
 
 
 
eth0      Link encap:Ethernet <strong>HWaddr 00:08:C7:1B:8C:02</strong>
 
inet addr:192.168.111.20  Bcast:192.168.111.255  Mask:255.255.255.0

Solaris/SunOS

• As the root user (or user with appropriate permissions)
• Type "/sbin/ifconfig -a"
• From the displayed information, find the Ethernet adapter (it will probably be called le0 or ie0)
• Locate the number next to ether. This is your MAC address

 
<strong>Example "ifconfig -a" output:</strong>
 
 
 
le0: flags=863 mtu 1500
 
inet 192.168.111.30 netmask ffffff00 broadcast 192.168.111.255
 
ether 0:3:ba:26:1:b0
 

FreeBSD/NetBSD

• As the root user (or user with appropriate permissions)
• Type "ifconfig -a"
• From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed)
• Locate the number next to the HWaddr. This is your MAC address

(Using the command"dmesg"will also display the MAC address -- along with a lot of other information)

 
<strong>Example "ifconfig -a" output:</strong>
 
 
 
ed0: flags=8843 mtu 1500
 
inet 192.168.111.40 netmask 0xffffff00 broadcast 192.168.111.255
 
ether 00:08:C7:1B:8C:02

OpenBSD

• As the root user (or user with appropriate permissions)
• Type "netstat -in"
• From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed)
• Locate the number below Address. This is your MAC address

 
Example "netstat -in" output:
 
 
 
Name  Mtu  Network  Address           Ipkts    Ierrs Opkts   Oerrs Colls
 
fxp0  1500 <Link>   00:08:c7:1b:8c:02 4112773  0     224501  0     0<em>
 
</em> 
<hr />
<h3><a name="sco" title="sco"></a>Caldera/SCO UnixWare/OpenUNIX</h3> 
<ul>
  <li>As the root user (or user with appropriate permissions)</li>   
  <li>Type "ndstat"</li>   
  <li>From the displayed information, find net0 (this is the default first Ethernet adapter)</li>   
  <li>Locate the number below <strong>MAC Address in use</strong>.  This is your MAC address</li> 
</ul>
The MAC Address will be displayed in the form of 00:00:c0:88:0a:2e. <span> 
<pre>
Example "ndstat" output:
 
 
 
Device       MAC address in use    Factory MAC Address
 
------       ------------------    -------------------
 
/dev/net0    00:00:c0:88:0a:2e     00:00:c0:88:0a:2e<em>
 
</em>

HP-UX (HP UNIX)

• As the root user (or user with appropriate permissions)
• Type "/usr/sbin/lanscan"
• From the displayed information, find lan0 (this is the default first Ethernet adapter)
• Locate the number below Address. This is your MAC address

 
<strong>Example "lanscan" output:</strong>
 
 
 
Hardware Station        Dev Hardware Net-Interface   NM  Encapsulation      Mjr
 
Path     Address        lu  State    NameUnit State  ID  Methods            Num
 
2.0.2    0x000E7F0D81D6 0   UP       lan0     UP     4   ETHER              52<em>
 
</em>

IRIX (SGI UNIX)

• IRIX 4.01 or later
• As the root user (or user with appropriate permissions)
• Type "netstat -ia"
• From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed)
• Locate the number below Address. This is your MAC address
• Alternate Method
• Typing "/etc/nvram eaddr" should also show the MAC address

 
Example "netstat -ia" output:
 
 
 
Name  Mtu    Network   Address            Ipkts   Ierrs   Opkts  Oerrs  Coll
 
ec0   1500   nowhere   warum              6514913 10234  184317     0  13513
 
192.168.111.90
 
00:00:6b:71:1a:6a<em>
 
</em>

NeXTStep

• As the root user (or user with appropriate permissions)
• Type "/sbin/ifconfig -a"
• From the displayed information, find the Ethernet adapter (it will probably be called le0 or ie0)
• Locate the number next to ether. This is your MAC address

 
Example "ifconfig -a" output:
 
 
 
le0: flags=863 mtu 1500
 
inet 192.168.111.70 netmask ffffff00 broadcast 192.168.111.255
 
ether 0:0:f:a1:75:a0
 

IX (IBM UNIX)

• As the root user (or user with appropriate permissions)
• Type "netstat -ia"
• From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed)
• Locate the number below Address. This is your MAC address

 
Example "netstat -ia" output:
 
 
 
Name  Mtu    Network   Address            Ipkts   Ierrs   Opkts  Oerrs  Coll
 
ec0   1500   nowhere   flotsam              5514233 11434  101317     0  14113
 
192.168.111.95
 
00:09:6B:51:1f:79
 

u64 UNIX (Digital UNIX)

• As the root user (or user with appropriate permissions)
• Type "netstat -ia"
• From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed)
• Locate the number below Address. This is your MAC address

 
Example "netstat -ia" output:
 
 
 
Name  Mtu    Network   Address            Ipkts   Ierrs   Opkts  Oerrs  Coll
 
ec0   1500   nowhere   jetsam              5514233 11434  101317     0  14113
 
192.168.111.95
 
00:00:F8:1a:73:da