MAC Address OUI Lookup

Enter MAC Address

About MAC Address OUI Lookup

A MAC (Media Access Control) address is a unique identifier assigned to network interfaces for communications on a network segment. The first three octets (24 bits or 6 hexadecimal digits) of a MAC address are the Organizationally Unique Identifier (OUI), which identifies the manufacturer of the device.

This tool uses a comprehensive OUI database (fetched locally) to identify the vendor associated with the entered MAC address.

All lookups are performed client-side in your browser after the initial database download.