What this means
The IEEE assigned the MA-L block 84FB43 to Central Denshi Seigyo. 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 84:FB:43, it is Central Denshi Seigyo hardware.
Frequently Asked Questions
Who owns MAC prefix 84FB43?
84FB43 is registered to Central Denshi Seigyo 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. Central Denshi Seigyo's block covers 16,777,216 addresses.
What devices use 84FB43?
Any network device with a MAC address starting 84:FB:43 was manufactured by or for Central Denshi Seigyo.