Who owns MAC prefix D4F0B4?

D4F0B4 is registered to Napco Security Technologies in the IEEE MA-L registry.

What devices use D4F0B4?

Any network device with a MAC address starting D4:F0:B4 was manufactured by or for Napco Security Technologies.

MA-L · OUI prefix

Napco Security Technologies

Any MAC address starting D4:F0:B4 is registered to Napco Security Technologies in US.

OUI prefix	D4F0B4
Vendor	Napco Security Technologies
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	D4:F0:B4:00:00:00

What this means

The IEEE assigned the MA-L block D4F0B4 to Napco Security Technologies. 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 D4:F0:B4, it is Napco Security Technologies hardware.

Look up another MAC