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MAC Address OUI Lookup

Identify selected common vendors from MAC prefixes with a clearly limited offline reference.

MAC Address OUI Lookup
Local input
Output
Processing…
Processed locally in your browserNo input history is saved
About this tool

Made for the task at hand.

Extract the first three bytes of a MAC address and compare them with a compact reference of familiar virtualization, development-board, and vendor prefixes. Unknown results are labeled honestly; no live registry query or complete IEEE database is implied.

How to use

  1. Enter full MAC addresses or six-hex-digit OUI prefixes.
  2. Separate multiple entries with spaces, commas, or new lines.
  3. Review listed vendors and the explicit limited-reference notice.
Your work stays yours.
Tool inputs are processed locally in your browser and are never sent to KitVerse servers. Clear the workspace when using a shared device.
Common questions
Is this a complete IEEE OUI database?

No. It is a deliberately small built-in list of common prefixes. An unlisted OUI may still be valid and assigned.

Does a prefix prove who manufactured a device?

Not necessarily. Addresses can be reassigned, virtualized, spoofed, or locally administered. Treat vendor identification as a clue rather than proof.

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