CASTELLE CORPORATION

Any device whose MAC address begins with 00:00:44 has a network interface built by CASTELLE CORPORATION. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:00:44

Organization

CASTELLE CORPORATION

Address

3255-3 SCOTT BOULEVARD SANTA CLARA CA US 95054

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.