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MAC address vendor lookup

Enter a MAC address to identify the vendor from the IEEE OUI database, with OUI prefix, address type (unicast/multicast), and administration (universal/local).

Accepts colon, hyphen, or compact hex. Matches vendors by the first 24-bit OUI.

Vendor data comes from the public IEEE MA-L registry. Refresh via scripts/build-mac-oui.mjs.

  • Normalized MACF4:5C:89:12:34:56
  • OUI (first 24 bits)F4:5C:89
  • Address typeUnicast
  • AdministrationUniversally administered (UAA)
  • Vendor / organizationApple, Inc.
  • Registered country/regionUnited States
  • Registered address1 Infinite Loop Cupertino CA US 95014