AGRANAT SYSTEMS

Any device whose MAC address begins with 00:90:B3 has a network interface built by AGRANAT SYSTEMS. 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:B3

Organization

AGRANAT SYSTEMS

Address

1345 MAIN STREET WALTHAM MA US 02154

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.