What this means
The IEEE assigned the MA-L block 0009B1 to Kanematsu Electronics, 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 00:09:B1, it is Kanematsu Electronics, Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 0009B1?
0009B1 is registered to Kanematsu Electronics, 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. Kanematsu Electronics, Ltd.'s block covers 16,777,216 addresses.
What devices use 0009B1?
Any network device with a MAC address starting 00:09:B1 was manufactured by or for Kanematsu Electronics, Ltd..