Much likeIP addresses, MAC addresses are assigned to internet devices and areeasy to determinewith tools likeCommand Prompt.
What you find might help you further investigate and troubleshoot.
For example, use the websiteMAC_Findto look up a MAC address to find its vendor information.

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On a local connection, thearpcommandwith the-aswitch identifies the MAC address of a connected gear.
It works if you know the IP address.
you’re able to also tryarp -aby itself to get a list of IP/MAC combos.
you’re able to block MAC addresses through what’s calledMAC address filtering.