MAC address lookup
Find the manufacturer of any network device from its MAC address, using the official IEEE registry.
How MAC address vendor lookup works
A MAC address is a 48-bit hardware ID, written as six pairs of hex digits like 3C:22:FB:12:34:56. The first three pairs are the Organizationally Unique Identifier (OUI), bought by the manufacturer from the IEEE. The last three pairs are the device’s serial number within that block. We match the OUI against the IEEE MA-L public registry (about 40,000 prefixes), bundled with the site and refreshed periodically.
Any format works: colons, dashes, dots (Cisco style 3c22.fb12.3456) or plain hex. Only the first six digits are needed.
Random and private MAC addresses
If the second hex digit is 2, 6, A or E, the address is locally administered: it was made up by software rather than burned in at the factory. Phones do this on purpose for privacy (“Private Wi‑Fi address” on iPhone, “Randomised MAC” on Android), so seeing an unknown device with such an address on your router usually just means a phone.
Spot unknown devices on your Wi‑Fi
Open your router’s connected-devices list, copy each MAC address and look it up here. A vendor like Espressif or Tuya usually means a smart plug or bulb; Hikvision or Dahua is a camera. Learn how to find the MAC address on every device.
Frequently asked questions
What is a MAC address lookup?
The first half of a MAC address (the OUI) is assigned by the IEEE to a manufacturer. A MAC lookup matches that prefix against the IEEE registry to tell you who made the network card, such as Apple, Samsung or TP-Link.
Why does my phone’s MAC address show no vendor?
Modern iPhones, Android phones and Windows laptops use a random “private” MAC address for each Wi‑Fi network. Random addresses have the locally administered bit set, so they don’t belong to any manufacturer.
Can a MAC address be used to find someone?
No. A MAC address is only visible on your local network and is never sent across the internet, so websites cannot see it. It only identifies the hardware maker.
How do I find my MAC address?
Windows: run getmac or ipconfig /all. macOS: System Settings → Wi‑Fi → Details. iPhone: Settings → General → About → Wi‑Fi Address. Android: Settings → About phone → Status. See our full guide for more devices.
More free tools
Vendor data: IEEE Registration Authority MA-L public listing.