Who owns MAC prefix 00D020?

00D020 is registered to AIM SYSTEM, INC. in the IEEE MA-L registry.

What devices use 00D020?

Any network device with a MAC address starting 00:D0:20 was manufactured by or for AIM SYSTEM, INC..

MA-L · OUI prefix

AIM SYSTEM, INC.

Any MAC address starting 00:D0:20 is registered to AIM SYSTEM, INC. in KR.

OUI prefix	00D020
Vendor	AIM SYSTEM, INC.
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:D0:20:00:00:00

What this means

The IEEE assigned the MA-L block 00D020 to AIM SYSTEM, INC.. 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:D0:20, it is AIM SYSTEM, INC. hardware.

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