Who owns MAC prefix 002221?

002221 is registered to ITOH DENKI CO,LTD. in the IEEE MA-L registry.

What devices use 002221?

Any network device with a MAC address starting 00:22:21 was manufactured by or for ITOH DENKI CO,LTD..

MA-L · OUI prefix

ITOH DENKI CO,LTD.

Any MAC address starting 00:22:21 is registered to ITOH DENKI CO,LTD. in JP.

OUI prefix	002221
Vendor	ITOH DENKI CO,LTD.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:22:21:00:00:00

What this means

The IEEE assigned the MA-L block 002221 to ITOH DENKI CO,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 00:22:21, it is ITOH DENKI CO,LTD. hardware.

Look up another MAC