Metro Ethernet Forum

Any device whose MAC address begins with 90:FF:79 has a network interface built by Metro Ethernet Forum. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

90:FF:79

Organization

Metro Ethernet Forum

Address

6033 W. Century Boulevard Los Angeles California US 90045

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.