What this means
The IEEE assigned the MA-L block 000EFB to Macey Enterprises. 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 00:0E:FB, it is Macey Enterprises hardware.
Frequently Asked Questions
Who owns MAC prefix 000EFB?
000EFB is registered to Macey Enterprises 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. Macey Enterprises's block covers 16,777,216 addresses.
What devices use 000EFB?
Any network device with a MAC address starting 00:0E:FB was manufactured by or for Macey Enterprises.