MAC Address Lookup

Find who made a device from its MAC address, or see that it's a phone's private random one, for one address or the whole list of your router or arp -a

No MAC address found: six bytes in hex, like 28:6F:B9:4A:1C:07, 28-6F-B9-4A-1C-07 or 286f.b94a.1c07, or the first three for the maker only.
One address, or a whole list pasted from your router's page of connected devices, arp -a or ip neigh. Looked up on your device in the IEEE's registry of 17 October 2026.
Reading a MAC address

The first half of an address names who made the network chip: the IEEE sells each maker a block of addresses, 16 million for the first 24 bits (MA-L), fewer for longer prefixes (MA-M, MA-S). The maker listed is the one that bought the block, often the maker of the Wi-Fi or Ethernet chip inside rather than the brand on the device.

The second lowest bit of the first byte says whether the address was made up: phones and computers now pick a random one for each Wi-Fi network (a private address), so they can't be followed from place to place. Such an address says nothing of who made the device: its second hex digit is 2, 6, A or E.