MAC Address Lookup
Find the registered vendor for a MAC prefix.
The first three bytes of a MAC address form the Organisationally Unique Identifier, assigned by the IEEE to a manufacturer. Looking that prefix up identifies who made the network interface, which helps when recognising unknown devices on a network.
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Public internet targets onlyResults
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How MAC Address Lookup works
What it does
Find the registered vendor for a MAC prefix.
What you get
The registered vendor associated with the address prefix.
Live data sources
The target is sent to a network provider. Results include their source; timeouts and unavailable data are clearly marked.
What if a check cannot finish?
Confirm your input and try again. A timeout, blocked request, or unavailable provider is not proof that a domain is broken. Internet measurements and third-party services have limits.
MAC Address Lookup — frequently asked questions
Why does my phone show an unknown vendor?
Modern phones randomise their MAC address per network for privacy. A randomised address has the locally-administered bit set and matches no registered vendor.
Can a MAC address be changed?
Yes, trivially, on most operating systems. Treat it as a hint about a device, never as an authentication factor.
Does the vendor tell me the device model?
No, only the manufacturer of the network interface — and large vendors hold many prefixes spanning very different products.