What this means
The IEEE assigned the MA-L block C4B512 to General Electric Digital Energy. 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 C4:B5:12, it is General Electric Digital Energy hardware.
Frequently Asked Questions
Who owns MAC prefix C4B512?
C4B512 is registered to General Electric Digital Energy 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. General Electric Digital Energy's block covers 16,777,216 addresses.
What devices use C4B512?
Any network device with a MAC address starting C4:B5:12 was manufactured by or for General Electric Digital Energy.