Mac Address Vendor Lookup is a free tool that identifies the registered vendor and technical details behind any MAC address or OUI (Organizationally Unique Identifier). Enter a MAC address to instantly retrieve the manufacturer name, IEEE assignment details, block range, country of origin, and address type (unicast/multicast, universal/local).
Beyond the free web lookup, it now offers:
Hosted JSON API: integrate MAC vendor lookups directly into your app or backend, with a free tier for testing and paid plans for higher volume
Self-hosted licensed version: run the full lookup engine on your own infrastructure, ideal for teams with data residency or offline requirements
No account, sign-up, or installation needed for the core web tool. Built for network administrators, developers, and IT professionals who need fast, reliable MAC address identification, whether for a one-off lookup or production-scale integration.
