Who owns MAC prefix 00021F?

00021F is registered to Aculab PLC in the IEEE MA-L registry.

What devices use 00021F?

Any network device with a MAC address starting 00:02:1F was manufactured by or for Aculab PLC.

MA-L · OUI prefix

Aculab PLC

Any MAC address starting 00:02:1F is registered to Aculab PLC.

OUI prefix	00021F
Vendor	Aculab PLC
Registry	MA-L (24-bit, large block)
Example MAC	00:02:1F:00:00:00

What this means

The IEEE assigned the MA-L block 00021F to Aculab PLC. 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 00:02:1F, it is Aculab PLC hardware.

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