How to Get a MAC Address from an IP Remotely

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Do you need to find the MAC address of another computer on your network? Whether you're using Windows, macOS, or Linux, you can easily find the MAC address of any host on your local network using simple commands. We'll show you how to use commands like arp and getmac to find the MAC address for a specific IP or hostname, and how to use nmap to see all IP and MAC addresses on the network.

How to Get MAC Address from IP

  • On Windows, open “Command prompt” and select “Run as administrator.” [1] On macOS or Linux, open the Terminal app or window. [2]
  • Type in ping ipaddress . If you only have the computer’s host name, ping that instead to get the IP address.
  • Run arp -a ipaddress to see the MAC address listed under “Physical Address” or “HWaddr.”
Method 1
Method 1 of 3:

Using the Arp Command

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    You can use the arp command on any operating system to find the MAC address of another computer on your network.
    • If you're using Windows, type cmd into the Windows Search bar, right-click Command prompt , and then select Run as administrator .
    • On macOS, type Terminal into Spotlight search, and then double-click Terminal .
    • On Linux, press Ctrl + Alt + T or open a terminal window from your window manager. [3]
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    You'll must make contact with the remote computer so its MAC address will be added to the cache—pinging is an easy way to do this. [4]
    • If you have the computer's hostname but not its IP address, just ping the hostname—this will give you the IP address, which you'll need for the next step.
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    The MAC address will appear under "Physical Address" in the arp results for Windows, and "HWaddress" on macOS and Linux. [5]
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Method 2
Method 2 of 3:

Using the Getmac Command (Windows)

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    If you can log in to the computer remotely with administrative access (and it's also running Windows), you can use the getmac command to view every MAC address on that device. [6] Type cmd into the Windows Search bar, right-click Command prompt , and then select Run as administrator .
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    The full command is {{kbd|getmac /s ipaddress /u username /p password . [7]
    • Replace ipaddress with the IP address or hostname of the remote computer.
    • Replace username and password with an actual username and password that has administrator rights on the remote computer.
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    Each MAC address will appear next to a description of the interface type. If the interface isn't active, you'll see "Media disconnected" next to that MAC address. [8]
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Method 3
Method 3 of 3:

Scanning with Nmap

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    You can use Nmap for Linux, Windows, or macOS to scan your local network and display the MAC and IP addresses of all connected computers. [9] You can download and install Nmap from https://nmap.org/download.html .
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    • If you're using Windows, type cmd into the Windows Search bar, right-click Command prompt , and then select Run as administrator .
    • On macOS, type Terminal into Spotlight search, and then double-click Terminal .
    • On Linux, press Ctrl + Alt + T or open a terminal window from your window manager.
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    To scan your network, you'll need to know which subnet to scan.
    • Windows: Run the ipconfig command.
    • macOS: Open System Preferences and go to Network > Advanced > TCP/IP . [10]
    • Linux: Run ifconfig or ip a .
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    The full command is nmap -sn xxx.xxx.xxx.* . Replace xxx.xxx.xxx.* with the network you want to scan. After a few moments, you'll see a list of all IP addresses on the network and their corresponding MAC addresses.
    • For example, if your IP address is 10.0.0.3 and you want to scan all hosts on your subnet, you would use nmap -sn 10.0.0.* .
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      Tips

      • You can only find the MAC address of a computer that's on the same subnet as your own. It's not possible to find a remote computer's MAC address unless you can log into that computer remotely.
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      • If the computer you're trying to reach is behind a firewall, its MAC address may not be visible.
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      Expert Interview

      Thanks for reading our article! If you'd like to learn more about getting a macc adress remotely, check out our in-depth interview with Stan Kats .

      References

      1. ↑ https://grok.lsu.edu/article.aspx?articleid=18026&printable=y
      2. ↑ https://support.apple.com/guide/terminal/open-or-quit-terminal-apd5265185d-f365-44cb-8b09-71a064a42125/mac
      3. ↑ https://ubuntu.com/tutorials/command-line-for-beginners#3-opening-a-terminal
      4. ↑ https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping
      5. ↑ https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/arp
      6. ↑ https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/getmac
      7. ↑ https://networking.grok.lsu.edu/article.aspx?articleid=15960
      8. ↑ https://its.weill.cornell.edu/guides/how-to-find-your-wireless-mac-address
      9. ↑ https://nmap.org
      1. ↑ https://computing.cs.cmu.edu/help-support/find-hostname

      About This Article

      Article Summary X

      1. Ping the IP address first.
      2. Use arp -a (ip address) to find the MAC address.

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