Seiko Epson Corporation

Any device whose MAC address begins with 44:D2:44 has a network interface built by Seiko Epson 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

44:D2:44

Organization

Seiko Epson Corporation

Address

80 Harashinden Shiojiri-shi Nagano-ken JP 399-0785

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.