Who owns MAC prefix 0021FA?

0021FA is registered to A4SP Technologies Ltd. in the IEEE MA-L registry.

What devices use 0021FA?

Any network device with a MAC address starting 00:21:FA was manufactured by or for A4SP Technologies Ltd..

MA-L · OUI prefix

A4SP Technologies Ltd.

Any MAC address starting 00:21:FA is registered to A4SP Technologies Ltd. in FI.

OUI prefix	0021FA
Vendor	A4SP Technologies Ltd.
Registry	MA-L (24-bit, large block)
Country	FI
Example MAC	00:21:FA:00:00:00

What this means

The IEEE assigned the MA-L block 0021FA to A4SP Technologies Ltd.. 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:FA, it is A4SP Technologies Ltd. hardware.

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