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.
Frequently Asked Questions
Who owns MAC prefix 000509?
000509 is registered to AVOC Nishimura Ltd. in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. AVOC Nishimura Ltd.'s block covers 16,777,216 addresses.
What devices use 000509?
Any network device with a MAC address starting 00:05:09 was manufactured by or for AVOC Nishimura Ltd..