MAC Address Generator

Generate random MAC addresses

Generate random MAC addresses for testing and development. Create valid unicast or multicast MAC addresses. Free MAC generator.

Quantity (5)

Separator

OUI Prefix (optional)

Uppercase Unicast only Locally administered

About MAC Addresses

Unicast vs Multicast: Bit 0 of first byte. 0 = unicast, 1 = multicast.

Universal vs Local: Bit 1 of first byte. 0 = universal, 1 = locally administered.

OUI: First 3 bytes identify the manufacturer.