ADVANCED FIBRE COMMUNICATIONS

Any device whose MAC address begins with 00:90:77 has a network interface built by ADVANCED FIBRE COMMUNICATIONS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:90:77

Organization

ADVANCED FIBRE COMMUNICATIONS

Address

PO BOX #751239 PETALUMA CA US 94975

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.