MAC address vendor lookup

Enter a MAC address (or just its first 6 characters) to find out which company made the network card. Useful for identifying unknown devices connected to your router or Wi-Fi network.

What is a MAC address?

The MAC address (Media Access Control) is the physical identifier of a network card: Wi-Fi, Ethernet or Bluetooth. It is 48 bits long and written as 12 hexadecimal digits, usually in 6 pairs separated by colons or hyphens. Unlike the IP address, it never leaves your local network: your router sees your devices' MACs, but websites on the Internet do not.

OUI: the manufacturer prefix

The first half of the address is the OUI (Organizationally Unique Identifier), a prefix the IEEE assigns to each manufacturer. That is why a MAC address tells you whether a device is made by Apple, Samsung, TP-Link or Espressif (very common in smart plugs and bulbs). This page uses the official IEEE MA-L, MA-M and MA-S registries, which we update regularly.

Random MAC addresses

For privacy, modern phones and computers (iOS, Android, Windows 11) use a different random MAC on each Wi-Fi network. These addresses have the "locally administered" bit set (the second character is 2, 6, A or E) and do not belong to any manufacturer, so they will not show up in the lookup.