Who owns MAC prefix 00213D?

00213D is registered to Cermetek Microelectronics, Inc. in the IEEE MA-L registry.

What devices use 00213D?

Any network device with a MAC address starting 00:21:3D was manufactured by or for Cermetek Microelectronics, Inc..

MA-L · OUI prefix

Cermetek Microelectronics, Inc.

Any MAC address starting 00:21:3D is registered to Cermetek Microelectronics, Inc. in US.

OUI prefix	00213D
Vendor	Cermetek Microelectronics, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:21:3D:00:00:00

What this means

The IEEE assigned the MA-L block 00213D to Cermetek Microelectronics, 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 00:21:3D, it is Cermetek Microelectronics, Inc. hardware.

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