Who owns MAC prefix 0040D1?

0040D1 is registered to FUKUDA DENSHI CO., LTD. in the IEEE MA-L registry.

What devices use 0040D1?

Any network device with a MAC address starting 00:40:D1 was manufactured by or for FUKUDA DENSHI CO., LTD..

MA-L · OUI prefix

FUKUDA DENSHI CO., LTD.

Any MAC address starting 00:40:D1 is registered to FUKUDA DENSHI CO., LTD. in JP.

OUI prefix	0040D1
Vendor	FUKUDA DENSHI CO., LTD.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:40:D1:00:00:00

What this means

The IEEE assigned the MA-L block 0040D1 to FUKUDA DENSHI 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 00:40:D1, it is FUKUDA DENSHI CO., LTD. hardware.

Look up another MAC