MAC address lookup
Find the vendor that owns a MAC address OUI prefix.
Loading tool…
About the mac address lookup
Looks up the manufacturer behind a MAC address in the public IEEE MA-L registry, covering nearly forty thousand assigned prefixes. It also reports whether the address is unicast or multicast and whether it is a burned-in or locally administered address.
Frequently asked questions
Why does my phone's MAC show no vendor?
Modern phones randomise their MAC per network for privacy. Randomised addresses set the locally-administered bit and use a prefix nobody owns, so there is nothing to look up.
What exactly is an OUI?
The Organisationally Unique Identifier, the first three bytes, bought from the IEEE by the manufacturer. The remaining three bytes are assigned by the vendor to individual devices.