Greenwald Industries

Any device whose MAC address begins with 44:C9:A2 has a network interface built by Greenwald Industries. 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:C9:A2

Organization

Greenwald Industries

Address

212 Middlesex Avenue Chester CT US 06412

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.