What it does
MacVendorCheck identifies the manufacturer behind any MAC address or OUI prefix. It holds 54,164 vendor assignments covering 30,315 organisations, each with its own page and a free API.
Where the data comes from
All vendor data is the official IEEE registry of Organizationally Unique Identifiers, across the three block sizes: MA-L (24-bit), MA-M (28-bit) and MA-S (36-bit). The IEEE Registration Authority publishes these registries openly, and we use them under the IEEE's terms of use for the public listings. The assignments are public facts; we add no private data. We download and rebuild them monthly, so lookups reflect the current registry.
How it is built
Like the rest of our network, MacVendorCheck runs on a local data store, not a paid third-party API, so lookups are instant and free. It shows no ads and asks for nothing.
The network
MacVendorCheck is part of a family of free, data-driven tools including IPSnapshot (IP lookup, VPN and blacklist checks), CardBinCheck and AreaCodeCheck.
Contact
Corrections or questions: [email protected]