How it works
The first 24 bits of a hardware address are an organisationally unique identifier (OUI) the IEEE assigns to a manufacturer. Some makers hold smaller 28-bit (MA-M) or 36-bit (MA-S) blocks. The lookup tries the most specific match first.
Random and private addresses
Phones and laptops now use a random MAC address for each Wi-Fi network to stop tracking. Those have the locally administered bit set (the second hex digit is 2, 6, A or E) and belong to no maker. A website can never see your MAC address; this tool is for addresses you read from a router, device label or log.
Questions
- Can I find a device's owner from its MAC address?
- No. The registry names the maker of the network chip, nothing more.