Who owns MAC prefix 0019FF?

0019FF is registered to Finnzymes in the IEEE MA-L registry.

What devices use 0019FF?

Any network device with a MAC address starting 00:19:FF was manufactured by or for Finnzymes.

MA-L · OUI prefix

Finnzymes

Any MAC address starting 00:19:FF is registered to Finnzymes in US.

OUI prefix	0019FF
Vendor	Finnzymes
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:19:FF:00:00:00

What this means

The IEEE assigned the MA-L block 0019FF to Finnzymes. 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 00:19:FF, it is Finnzymes hardware.

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