What this means
The IEEE assigned the MA-L block CCF957 to u-blox 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 CC:F9:57, it is u-blox AG hardware.
Frequently Asked Questions
Who owns MAC prefix CCF957?
CCF957 is registered to u-blox 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. u-blox AG's block covers 16,777,216 addresses.
What devices use CCF957?
Any network device with a MAC address starting CC:F9:57 was manufactured by or for u-blox AG.