HDMI Licensing, LLC

Any device whose MAC address begins with 44:48:91 has a network interface built by HDMI Licensing, LLC. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

44:48:91

Organization

HDMI Licensing, LLC

Address

1140 East Arques, Suite 100 Sunnyvale CA US 94085

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.