Who owns MAC prefix 005021?

005021 is registered to EIS INTERNATIONAL, INC. in the IEEE MA-L registry.

What devices use 005021?

Any network device with a MAC address starting 00:50:21 was manufactured by or for EIS INTERNATIONAL, INC..

MA-L · OUI prefix

EIS INTERNATIONAL, INC.

Any MAC address starting 00:50:21 is registered to EIS INTERNATIONAL, INC. in US.

OUI prefix	005021
Vendor	EIS INTERNATIONAL, INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:50:21:00:00:00

What this means

The IEEE assigned the MA-L block 005021 to EIS INTERNATIONAL, 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 00:50:21, it is EIS INTERNATIONAL, INC. hardware.

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