Who owns MAC prefix 000509?

000509 is registered to AVOC Nishimura Ltd. in the IEEE MA-L registry.

What devices use 000509?

Any network device with a MAC address starting 00:05:09 was manufactured by or for AVOC Nishimura Ltd..

MA-L · OUI prefix

AVOC Nishimura Ltd.

Any MAC address starting 00:05:09 is registered to AVOC Nishimura Ltd. in JP.

OUI prefix	000509
Vendor	AVOC Nishimura Ltd.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:05:09:00:00:00

What this means

The IEEE assigned the MA-L block 000509 to AVOC Nishimura 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 00:05:09, it is AVOC Nishimura Ltd. hardware.

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