How to find a computer name or IP with the MAC address?

By mikepbmike
Jun 2, 2011
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  1. Greetings!

    I have a device on my network that I'm trying to ID. I can get the MAC address off the switch, and I need to get either the IP address or the name of the device. How do I do this using the MAC address?

    Thanks in advance.

  2. jobeard

    jobeard TS Ambassador Posts: 14,386   +450

    download a copy of Network Magic to one system and let it discover the devices on your LAN. even after the trial period lapses, it will still keep the mapping current.

    For every device discovered, there are details for the device
    Mac addr, IP addr, and device/system info

    Attached Files:

  3. LNCPapa

    LNCPapa TS Special Forces Posts: 4,570   +374

    You could try running an arp -a to get a listing of the ARP cache, but this will only display that address if you've had any kind of communication (including broadcasts) with that device. It's designed to go the other way around (IP to MAC) but can sometimes be used the way you want in a limited fasion.

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