How to find your computer's MAC Address

How to find your computer's MAC Address

Every computer with the ability to connect to the network has one or more MAC (media access control) addresses. The MAC address is used as a unique identifier. Commonly, this is used to allow an IT Pro to reserve an IP address for your computer. However your MAC is considered private within your local network, and is not passed across network boundaries.

Below are instructions for finding the active MAC address of your computer, for Windows, Mac, and Linux.

If you are on a wired University network, you may be able to use our My MAC Address tool to automatically find your MAC address (based on your current IP address, from university network logs).

Here is a link to some alternate instructions for several operating systems.



 On a Windows operating system:

example from Windows 7

1) Open a command prompt
- a) click the Start button
- b) type: cmd
- c) hit Enter

2) In the command prompt, type: ipconfig -all
- a) find the section containing the words "Ethernet adapter Local Area Connection"
- b) your Ethernet MAC will be listed as "Physical Address"
- c) it is denoted by orange arrows in the example below





 On a Mac(intosh) operating system (OSX):

example from OSX 10.9.4 (Mavericks)

1) Open the Network Utility:
- a) click the Spotlight tool, in the top right corner of the screen, near the clock
- b) type: network utility
- c) hit Enter

2) In the Network Utility Window:
- a) from the drop-down menu, select the option containing the word "Ethernet"
- b) your Ethernet MAC will be listed as "Hardware Address"
- c) it is denoted by orange arrows in the example below





 On a Linux operating system:

example from Ubuntu 14.0.4.2

1) Open the Terminal
- a) click the search button, or hit the Windows key
- b) type: terminal
- c) hit Enter

2) In the terminal, type: ifconfig
- a) find the section containing "eth0"
- b) your Ethernet MAC will be listed as "HWaddr"
- c) it is denoted by orange arrows in the example below





Short URL for this page: http://go.illinois.edu/getmac



Keywords:mac address   Doc ID:84424
Owner:Matthew S.Group:University of Illinois Engineering IT
Created:2018-07-31 18:16 CSTUpdated:2018-07-31 18:18 CST
Sites:University of Illinois Engineering IT
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