Who owns MAC prefix 00021D?

00021D is registered to Data General Communication Ltd. in the IEEE MA-L registry.

What devices use 00021D?

Any network device with a MAC address starting 00:02:1D was manufactured by or for Data General Communication Ltd..

MA-L · OUI prefix

Data General Communication Ltd.

Any MAC address starting 00:02:1D is registered to Data General Communication Ltd. in CN.

OUI prefix	00021D
Vendor	Data General Communication Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	00:02:1D:00:00:00

What this means

The IEEE assigned the MA-L block 00021D to Data General Communication 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 00:02:1D, it is Data General Communication Ltd. hardware.

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