Who owns MAC prefix 0021B2?

0021B2 is registered to Fiberblaze A/S in the IEEE MA-L registry.

What devices use 0021B2?

Any network device with a MAC address starting 00:21:B2 was manufactured by or for Fiberblaze A/S.

MA-L · OUI prefix

Fiberblaze A/S

Any MAC address starting 00:21:B2 is registered to Fiberblaze A/S in DK.

OUI prefix	0021B2
Vendor	Fiberblaze A/S
Registry	MA-L (24-bit, large block)
Country	DK
Example MAC	00:21:B2:00:00:00

What this means

The IEEE assigned the MA-L block 0021B2 to Fiberblaze A/S. 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 00:21:B2, it is Fiberblaze A/S hardware.

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