What this means
The IEEE assigned the MA-L block CC1EFF to Metrological Group BV. 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 CC:1E:FF, it is Metrological Group BV hardware.
Frequently Asked Questions
Who owns MAC prefix CC1EFF?
CC1EFF is registered to Metrological Group BV 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. Metrological Group BV's block covers 16,777,216 addresses.
What devices use CC1EFF?
Any network device with a MAC address starting CC:1E:FF was manufactured by or for Metrological Group BV.