What this means
The IEEE assigned the MA-L block F41F0B to YAMABISHI Corporation. 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 F4:1F:0B, it is YAMABISHI Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix F41F0B?
F41F0B is registered to YAMABISHI Corporation 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. YAMABISHI Corporation's block covers 16,777,216 addresses.
What devices use F41F0B?
Any network device with a MAC address starting F4:1F:0B was manufactured by or for YAMABISHI Corporation.