Who owns MAC prefix 444891?

444891 is registered to HDMI Licensing, LLC in the IEEE MA-L registry.

What devices use 444891?

Any network device with a MAC address starting 44:48:91 was manufactured by or for HDMI Licensing, LLC.

MA-L · OUI prefix

HDMI Licensing, LLC

Any MAC address starting 44:48:91 is registered to HDMI Licensing, LLC in US.

OUI prefix	444891
Vendor	HDMI Licensing, LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	44:48:91:00:00:00

What this means

The IEEE assigned the MA-L block 444891 to HDMI Licensing, LLC. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 44:48:91, it is HDMI Licensing, LLC hardware.

Other HDMI Licensing, LLC prefixes

HDMI Licensing, LLC holds 2 registered blocks in total.

000C03

Look up another MAC