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Find MAC or IP Address

To Find your MAC or IP address follow the instructions for your operating system:

Windows
  1. Click on:    Start
  2. Select:   Run
  3. In the box type:   cmd
  4. In the command prompt box type:   ipconifg /all
  5. A lists of all interfaces will appear:
    • Find: “Ethernet adapter Local Area Connection”
      • Look for Physical Address or MAC address or Hard Address (ex: 00-12-AB-34-CD-56)
      • Look for IP Address (ex 137.99.123.45)
      • Look for Subnet Mask (ex 255.255.255.0)
      • Look for Default Gateway (ex 137.99.123.1)

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For Mac (10.4)

  1. Click on:   Apple Icon
  2. Go to:   System Preferences
  3. Click on:   Network
  4. In the ‘Show’ Pull down: Select your adapter (usually Built-in Ethernet or AirPort)
    1. For Mac address:
      • Go to Ethernet or Airport (same as adapter setting from pull down)
      • Look for MAC address (ex: 00:12:AB:34:CD:56)
    2. For IP Address:
      • Go to: TCP/IP
      • Look for IP Address (137.99.123.45)
      • Look for Subnet Mask (255.255.255.0)
      • Look for Router (137.99.123.1)

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Linux
  1. Open the command shell
  2. Type:   /sbin/ifconfig
  3. All network adapters will be listed. If you only have one physical Ethernet adapter, it will be listed as Eth0. If you have more than one, the will be listed Eth0, Eth1, Eth2, etc.
  4. Under the corresponding adapter look for:
    • HWaddr (ex: 00:12:AB:34:CD:56)
    • inet addr (ex 137.99.123.45)
    • Bcast (ex 137.99.123.255)
    • Mask (255.255.255.0)

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Updated: 1/21/2009