Who owns MAC prefix 0021D0?

0021D0 is registered to Global Display Solutions Spa in the IEEE MA-L registry.

What devices use 0021D0?

Any network device with a MAC address starting 00:21:D0 was manufactured by or for Global Display Solutions Spa.

MA-L · OUI prefix

Global Display Solutions Spa

Any MAC address starting 00:21:D0 is registered to Global Display Solutions Spa in IT.

OUI prefix	0021D0
Vendor	Global Display Solutions Spa
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	00:21:D0:00:00:00

What this means

The IEEE assigned the MA-L block 0021D0 to Global Display Solutions Spa. 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:D0, it is Global Display Solutions Spa hardware.

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