MAC Address Lookup

Validate, analyze, and convert MAC addresses between formats

Enter MAC Address

Supported formats: XX:XX:XX:XX:XX:XX, XX-XX-XX-XX-XX-XX, XXXX.XXXX.XXXX, XXXXXXXXXXXX

Random MAC Generator

Unicast

Single destination (clear LSB of first octet)

Locally Administered

Custom/local assignment (set second LSB)

About MAC Addresses

A MAC (Media Access Control) address is a unique 48-bit identifier assigned to network interfaces. It operates at the data link layer (Layer 2) of the OSI model.

OUI (First 3 Octets)

The Organizationally Unique Identifier is assigned by IEEE to manufacturers. It identifies the vendor of the network interface.

NIC (Last 3 Octets)

The Network Interface Controller specific portion is assigned by the manufacturer to uniquely identify each device.

Special Bits in First Octet

Bit 0 (LSB): 0 = Unicast, 1 = Multicast
Bit 1: 0 = Universally administered, 1 = Locally administered