What this means
The IEEE assigned the MA-L block F842FB to Yasuda Joho 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 F8:42:FB, it is Yasuda Joho Co.,ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix F842FB?
F842FB is registered to Yasuda Joho Co.,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. Yasuda Joho Co.,ltd.'s block covers 16,777,216 addresses.
What devices use F842FB?
Any network device with a MAC address starting F8:42:FB was manufactured by or for Yasuda Joho Co.,ltd..