What this means
The IEEE assigned the MA-L block 102CEF to EMU Electronic AG. 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 10:2C:EF, it is EMU Electronic AG hardware.
Frequently Asked Questions
Who owns MAC prefix 102CEF?
102CEF is registered to EMU Electronic AG 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. EMU Electronic AG's block covers 16,777,216 addresses.
What devices use 102CEF?
Any network device with a MAC address starting 10:2C:EF was manufactured by or for EMU Electronic AG.