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MAC OUI Lookup
Identify the hardware vendor behind a MAC address.
Why this exists
An unknown device on the LAN or in DHCP leases is just a MAC until you resolve the OUI. It also flags randomised (locally-administered) addresses, which is why a device keeps changing identity.
How to use
- Paste a MAC in any format (00:1A:2B…, 001A.2B…, 00-1A-2B…).
- The first 24 bits are matched against the IEEE registry to name the vendor.
- Locally-administered and multicast addresses are flagged.
Worked example
Paste a MAC in any format, 90:47:48:xx:xx:xx resolves to Sony Interactive Entertainment. Randomised (locally-administered) and multicast addresses are flagged.