Who owns MAC prefix 0021D9?

0021D9 is registered to SEKONIC CORPORATION in the IEEE MA-L registry.

What devices use 0021D9?

Any network device with a MAC address starting 00:21:D9 was manufactured by or for SEKONIC CORPORATION.

MA-L · OUI prefix

SEKONIC CORPORATION

Any MAC address starting 00:21:D9 is registered to SEKONIC CORPORATION in JP.

OUI prefix	0021D9
Vendor	SEKONIC CORPORATION
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:21:D9:00:00:00

What this means

The IEEE assigned the MA-L block 0021D9 to SEKONIC CORPORATION. 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:D9, it is SEKONIC CORPORATION hardware.

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