MAC Address Lookup
Identify the manufacturer behind a MAC address from a bundled offline OUI list.
- Runs in your browser
- No upload on server
- Free, forever
- Enter details
- Run check
- Copy result
Accepts colons, dashes, dots or no separators.
- Formatted
- B8:27:EB:12:34:56
- Vendor (OUI)
- Raspberry Pi
- OUI prefix
- B827EB
- Cast
- Unicast · Globally unique
How this works — and why it's private
- Paste a MAC address — separators are optional.
- We check the first 3 bytes (OUI) against a built-in vendor list.
- For the full IEEE database, the offline list covers common consumer hardware.
Vendor lookup is offline — no network request is made.
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