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Free tool
MAC address lookup
Find a device's manufacturer from its MAC address. Bundled OUI database, the lookup runs in your browser. Accepts several MACs at once.
| MAC | Vendor |
|---|
The OUI data comes from the public IEEE registry (via Wireshark's “manuf” list). Modern phones use randomized MACs on Wi-Fi, so they may show as private.
What is the OUI in a MAC address?
Every network card has a 12-digit hexadecimal MAC address. The first 6 digits (sometimes 7 or 9) are the OUI, a prefix the IEEE assigns to each manufacturer. Use this lookup to identify that unknown device on your Wi-Fi, find an IP camera or DVR on the network, or check your router's DHCP client list.
Frequently asked questions
Where do I find a device's MAC address?
In your router's DHCP client or “connected devices” list, with the arp -a command on Windows/Mac, or on the device's label.
Why does a MAC show as “random/private”?
Android, iPhone and Windows use randomized MAC addresses on Wi-Fi for privacy. You can spot them because the second digit is 2, 6, A or E, and they belong to no manufacturer.
Are the MACs sent to a server?
No. The database is downloaded once and the lookup runs in your browser.
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